一般注記Distributed to depository libraries in microfiche
"July 1987."
"Report series"--Cover
Physical description for original version: iii, 34 p. ; 28 cm
書誌注記Includes bibliographical references (p. 34)
原資料等に関する注記原資料の出版事項: [Boulder, CO] ; Springfield, VA : U.S. Dept. of Commerce, National Telecommunications and Information Administration : For sale by the National Technical Information Service, [1987]
SUPTDOC番号: C 60.10: 87-219
GPO管理番号: 126-D-3 (MF)