Selected Federal computer-based information systems,
Herner, Saul.
Vellucci, Matthew J.,joint author.
Herner and Company.Selected mechanized scientific and technical information systems.
Washington, Information Resources Press,
1972.
"Enlarged and updated version of Selected mechanized scientific and technical information systems ... published in 1968 [by Herner and Company, Washington, D.C.]"
Information storage and retrieval systems.
Information services