一般注記Shipping list no.: 91-489-P
"June 1991"--P. [4] of cover
"OTA-SET-496"--P. [4] of cover
Physical description for original version: x, 63 p. : 26 cm
書誌注記Includes bibliographical references
原資料等に関する注記原資料の出版事項: Washington, D.C. : Congress of the U.S., Office of Technology Assessment : For sale by the Supt. of Docs., U.S. G.P.O., [1991]
ISBN: 0160332796 (: )
SUPTDOC番号: Y 3.T 22/2: 2 T 68/7
テクニカルリポート番号: OTA-SET-496
GPO管理番号: 1070-M