An operational system for subject switching between controlled vocabularies
By: June P. Silvester and Paul H. Klingbiel.
Contributors: Klingbiel, Paul H.; United States. National Aeronautics and Space Administration.
Series: [NASA contractor report] -- NASA CR-192333.; NASA contractor report -- NASA CR-192333.
Publisher: National Aeronautics and Space Administration
Published: 1993
Place of publication: [Washington, DC
Language: eng
Format: Microform
Subjects: Subject headings.; Information storage and retrieval systems.
Notes: Repr. from Information processing & management, v. 29, no. 1, p. 47-59, 1993.

Distributed to depository libraries in microfiche.

Shipping list no.: 93-0615-M.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1993] 1 microfiche.