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The history of snow survey and water supply forecasting (Historical notes)

The history of snow survey and water supply forecasting (Historical notes)
Paper図書
editorsU.S. Dept. of Agriculture, Natural Resources Conservation Service2008
Other Libraries in Japan
  • Author HeadingHelms, Douglas, 1945- Phillips, Steven E. Reich, Pa...

Readings in the history of the Soil Conservation Service (Historical notes ; no. 1)

Readings in the history of the Soil Conservation Service (Historical notes ; no. 1)
Microform図書
1992<YCA-A 57.74:1>
National Diet Library
  • Author HeadingHelms, Douglas, 1945- United States. Soil Conservat...

Profiles in the history of the U.S. Soil Survey

Profiles in the history of the U.S. Soil Survey
Paper図書
edited by Douglas HelmsIowa State University Press2002
Other Libraries in Japan
  • Author HeadingHelms, Douglas, 1945- Effland, Anne B. W. Durana, P...

Preliminary inventory of the records of the Civilian Conservation Corps : record group 35 / compiled by Douglas Helms. (P[reliminary] i[nventory] - National Archives and Records Service ; PI11 (Rev.))

Preliminary inventory of the records of the Civilian Conservation Corps : record group 35 / compiled by Douglas Helms. (P[reliminary] i[nventory] - National Archives and Records Service ; PI11 (Rev.))
Paper図書
National Archives & Records Service, General Services Administration1980.<D1-458>
National Diet Library
  • Author Heading...cords Service. Helms, Douglas, 1945- United States. National Archi...

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