一般注記Shipping list no.: 90-542-P
"June 1990"--P. [4] of cover
"OTA-E-453"--P. [4] of cover
Physical description for original version: viii, 63 p. ; 27 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, DC : Congress of the U.S., Office of Technology Assessment : For sale by the Supt. of Docs., U.S. G.P.O., [1990]
SUPTDOC番号: Y 3.T 22/2: 2 El 2/10
テクニカルリポート番号: OTA-E-453
GPO管理番号: 1070-M