U.S. Government research and development reports index
U.S. Government research and development reports index.
[Springfield, Va. : National Technical Information Service, 1969-1971].
Vol. 68 (Jan./Dec. 1968)-v. 70 (Jan./Dec. 1970).
4 v. : ill. ; 27 cm.
U.S. Government research & development reports index
Cumulated vols. are issued in sections: subject, corporate & personal author, etc.
Title from cover.
Vols. for 1968-69 issued by U.S. Clearinghouse for Federal Scientific and Technical Information; 1970, by U.S. Dept. of Commerce, National Technical Information Service.
U.S. Government research and development reports