"June 1981"--P. 4 of cover.
"OTA-O-142"--P. 4 of cover.
CIS Microfiche Accession Numbers: CIS 81 J952-34
Reuse of record except for individual research requires license from LexisNexis Academic & Library Solutions.
Microfiche. [Bethesda, Md.] : LexisNexis Academic & Library Solutions, 1981. 11 X 15 cm.