3.Material types, media types, collection and hierarchical structure of bibliographies on NDL Search
In the National Diet Library Search, materials are expressed by a combination of material type and media type. These items can be used for searches and can also be used as clues to understand how to use them. In addition, collection items are assigned to the collection of materials, which can be used for searching.
3-1 Material type
This item indicates the type of information resource.
NDL Search includes the following types of materials:
If multiple material types are selected with the check box on the search screen, the search is performed as an OR search.
The information marked "*" is mainly for information about the materials in the NDL's collection. Please also check Research Navi for information on the use of each type of material at the NDL.
| Material Type | Description |
|---|---|
| Books | Books, non-books (materials categorized into other material types such as Braille), reports under Grants-in-Aid for Scientific Research, materials from international organizations, electronic books to which the NDL subscribes, etc. *Some yearbooks have been cataloged as journals since approx. 1986. |
| Periodicals | Includes magazines, magazines in microform, electronic journals and newspapers to which the NDL subscribes, online journals published in Japan and assigned ISSN, and other periodicals. You can also search for articles in the Japanese Periodicals Index created by the National Diet Library from here. *Some yearbooks have been cataloged as books. |
| Newspapers | Includes newspapers and newspapers in microform. |
| Japanese and Chinese Old Materials | Includes Japanese materials created before the end of the Edo period (1868) and Chinese materials created before the end of the Qing dynasty. *Western classical books (old Western books) at the NDL are cataloged as "Books". ＞ Research Navi "Classical Books"(in Japanese) ＞Research Navi "How to Search for Classical Materials" ＞ Research Navi "Important Cultural Property of the National Diet Library" |
| Doctoral dissertation | Includes Japanese-language doctoral dissertations, foreign-language doctoral dissertations.
|
| Maps | Includes Japanese- or foreign-language single-sheet maps and residential maps produced during and after the Meiji period.
|
| Music scores | Includes music scores that contain multiple works, or music scores that is printed and sold one piece at a time. |
| Websites in Japan | Includes websites collected by [Web archiving Project (WARP)] (https://warp.ndl.go.jp/). |
| Online Publications | Includes online publications such as annual reports, yearbooks, directories, public relations magazines, bulletins, articles in journals, and other similar materials collected by the NDL. You can also search for online publications articles in the Japanese Periodicals Index created by the National Diet Library from here. |
| Electronic Resources | Includes CD-ROMs, DVD-ROMs, etc.
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| Video | Includes video materials such as videotapes, DVDs, etc. *Videos that were attachments to books are cataloged as books. |
| Audio | Includes recorded music such as CDs, phonograph records, etc.
|
| Standards and Technical Reports | Includes specialized materials on science and technology such as standards, technical reports, papers from academic societies and associations, and UMI dissertations. ** For more information about these collection (feature, holdings, search hint), please refer to links below (Japanese only). [Standards(Within Japan)(Overseas)] International standards, national standards, and organization standards such as ISO, IEC, JIS. [Technical Report] U.S. Government Technical Reports (PB, AD, DOE, NASA, etc.), INIS report, RAND report, etc. [Papers from academic societies and associations] Mainly papers of four academic societies (AIAA, ASME, SAE, SME) [UMI dissertations] North American doctoral dissertations in the field of science and technology distributed by UMI. |
| Manuscripts and Images | Includes documents, correspondence, nishiki-e, posters, etc. |
| Articles | Inclues bibliography of periodical articles and newspaper articles. On the search screen, you can search by articles by checking "Periodical article etc." *In the case of materials held by the National Diet Library, the Japanese Periodicals Index prepared by the National Diet Library, including articles on "e-books and electronic magazines". *For a list of journals included in the Japanese Periodicals Index, please visit the NDL's website. |
3-2 Media Types
This item indicates the recording format of the information resource.
| Material Form | Icon | Description |
|---|---|---|
| Digital | This is a material that can be used using electronic devices such as computers and smartphones. It is a form of material that includes digitized materials from paper media, e-books, and papers published in PDF. Some materials can be available via Internet, but others need to be purchased to use them, and some materials can only be viewed by visiting a specific library. It does not include items recorded on storage media. | |
| Paper | This is a paper document. This includes printed books, periodicals, newspapers, maps, etc. It may not be available depending on the state of preservation. Please check the information of the holding institution before using it. | |
| Micro | This is the material recorded on microfilm, microfiche, microopaque, etc. Special equipment is required for use. Please check the information of the holding institution before using it. | |
| Recording media | Includes documents that are not stored on digital, paper, and micro media. This includes CDs/DVDs, USB sticks, records, tapes, game software, etc. Special equipment is required for use. Please check the information of the holding institution before using it. |
3-3 Collection
A collection is an item that represents a specific group of materials.
In addition to the collection, which consists only of materials available at the NDL, there are also collections that are commonly granted to other libraries in Japan.
Some collections are organized according to a specific purpose or content. Even if it is difficult to narrow down the materials by selecting the material type alone, you may be able to narrow down the list to a specific material by specifying a collection.
| Collection Name | Description |
|---|---|
| Children's Books | Books, magazines, and other materials created for children. Materials organized by the NDL as children's books, materials from libraries participating in the former Children's Book Catalog, and materials classified as children's books by organizations affiliated with NDL Search are eligible. |
| Materials for the Disabled | Electronic materials for persons with print disabilities, such as DAISY held by the National Diet Library, audio tapes for persons with print disabilities, Braille books, large-print and enlarged manuscripts *About Mina Search |
| Collection Name | Description |
|---|---|
| Modern Japanese Political History Materials | Collection of library materials available in the Modern Japanese Political History Materials Room, which originally belonged to political leaders, senior civil servants and military officers. Some of these materials have been used in the NDL's digital exhibitions. Individual collections are named after their former owners. ＞ Research Navi 「憲政資料」の検索・複写申込ガイド」(in Japanese) |
| Materials on the Allied Occupation of Japan | Collection of library materials related to the Allied Occupation of Japan. ＞ Research Navi 「日本占領関係資料」の検索・複写申し込みガイド」(in Japanese) |
| Prange Collection | During the occupation period after World War II, Japanese publications were censored by the Allied Forces. The Gordon W. Prange Collection consists of newspapers, magazines and books submitted to the Allied Powers for censorship, and the originals are now preserved at the University of Maryland in the U.S.A. The NDL now holds some books and magazines from this collection. ＞Research Navi "Gordon W. Prange Collection" |
| Materials on Japanese Emigration | Collection of books and periodicals published in North, Central and South American countries, private papers in original and in microfilm, and government documents in microfilm related to Japanese emigration. ＞Research Navi "Finding Aids for Materials on Japanese emigration"(in Japanese) |
| Ashihara Collection Collection of the late Eiryo Ashihara, famous researcher of performing arts including ballet, chanson, and circuses. | undefined ＞Research Navi "Eiryo Ashihara Collection" |
| Music Manuscripts | This collection has been partly digitized from music manuscripts and documents collected by the NDL. ＞Research Navi 「手稿譜及びその関連資料」(in Japanese) |
| Dramatic Scripts This collection includes TV and radio scripts written before 1980 which were donated to the NDL by the Consortium for the Promotion of Broadcast Script Archives in Japan. Part of the collection has been digitized and made available via the Internet. | undefined ＞Research Navi 「日本脚本アーカイブズ推進コンソーシアム寄贈の放送脚本」(in Japanese) |
| Historical Recordings | The Historical Recordings Collection comprises digital audio of music, speeches, and other sound recording originally issued on 78-rpm records and metal discs produced in Japan during the first half of the 20th century. The original recordings were digitized by the Historical Records Archive Promotion Conference (HiRAC). Recordings that are still subject to copyright protection are available only on the premises at the NDL or its partner libraries. Recordings for which copyright has expired are available via the Internet. ＞[Reference: 音の歴史を残す（国立国会図書館月報606号 p.4～)] (https://dl.ndl.go.jp/pid/3192241)(in Japanese) ＞List of participating libraries ＞Historical Recordings Collection special website (Rekion) |
| Scientific Films | This collection includes materials produced between the 1950s and the 1990s, which were collected and digitized by the Society for the Support of the Science Film Museum (Incorporated NPO). |
3-4 Hierarchical Structure of Bibliographies in NDL Search
In addition to the material type and media type of materials, NDL Search searches and displays the hierarchical structure of materials at three levels: title, volume, and article. In the basic operation, you can use it without any problems without being aware of these three levels. However, depending on the purpose of the search, it may be easier to find the information you are looking for by being aware of the hierarchy.
| Title | A hierarchy that is created when there is a unit for organizing volume issues, such as the title of a serial publication or a series of books. |
| Volume | Volume is the basic unit for using materials such as each volume of a magazine, books, and maps, and is also the basic unit of search in NDL Search. |
| Article | Article is a hierarchy with articles and papers published in the volume issue. In some cases, it is linked to the volumer, but in other cases, the article is established on its own. |
For example, if there is a journal called "A Journal" and there is an article "Natsume Soseki's Research" in the February issue, the title: "A Journal", the volume number: February issue, and the article: "Natsume Soseki's Research".
The hierarchical structure differs depending on the type of material. In the case of newspapers, there is no hierarchical structure.
Hierarchical structure of bibliographies in search
NDL Search uses bibliographies at the book/volume level as the basic unit of search and display. The search target includes title-level bibliographies and article-level bibliographies, but the display differs depending on whether the "Group by title" button is turned on or off, as shown below.
- When "Group by title" is turned on (at the time of default search)
- Title-level bibliographies are displayed as a bundle of individual volumes, and article-level bibliographies are displayed as a table of contents for bibliographies at the book/volume level. For example, if you search for Natsume Soseki, if there is an article that includes Natsume Soseki in both the February and March issues of a magazine called "A Journal", the February and March issues will be linked under A Journal, and the articles will be highlighted under each.
If you sort by year of publication, it will be sorted by the year of publication of the title-level bibliography, not the year of publication of each volume. If you want to sort strictly by year of publication, please turn off "Group by title".
Examples
For example, if the following material hits the search:
① Journal title: "A Journal", published in 1990~2000
①-1: Publication year: 2000
①-2: Publication year: 1991
②Book B, published in 1993
- When "Group by title" is turned on and sorting by "Published(new first)"
- The publication year of "①-2" in 1991 is older than the publication year of "②" in 1993, but the journal titles in "①" are sorted based on the year of publication in 2000. Therefore, the order is as follows:
[①→①-1→①-2]→②
- The characters in [] are grouped together in the title and displayed as a whole.
- When "Group by title" is turned off and sorting by "Published(new first) "
- Sorted based on the year of publication of each material. Therefore, the order is as follows:
①-1→①→①-2→②
- Even if the journal title bibliography in (1) is included in the search results and sorted in the same way as a normal volume issue.
- Title (1-a)
Displays a title-level bibliography. By clicking on it, you will be taken to the title-level bibliographic records screen, where you can check the volume issues in a list. - Volume (1-b)
The information of the volume number is displayed in conjunction with the title-level bibliography. - Article (1-c)
If there are any hits for the search term, they will be highlighted below the volume issue. It is not possible to transition directly from the search results list to an article-level bibliography. Click the title of the article from the bibliographic records screen at the volume level to move to the article.
- When "Group by title" is turned off
- Each volume issue is displayed in the search results list. If the content of the article is a hit in the search, it will be highlighted.
If you check "Articles" in the material type, the article-level bibliography will be searched and displayed directly. In this case, the article-level bibliography is displayed in the search results list.
Some articles are not linked to volume issues and may not be found in the default search. If you want to search for article-level materials in detail, please check "Articles"
Hierarchical structure of bibliographies in the use of materials
When requesting for materials at the NDL, you can request without being aware of the hierarchical structure of the materials. Please check the display in the "Reading at the Library" area and request. If you request remote photoduplicaion service from an article-level material, the article will be automatically designated as the copy location.
If you open the article-level bibliographic records screen, you may not be able to display the usage status of other organizations properly. Even in that case, if you use the "breadcrumbs" area to transition to a bibliography at the volume level, you may be able to display information on the holdings of other libraries in Japan.