Using subject headings for online retrieval : theory, practice, and potential /
Drabenstott, Karen Markey.
Vizine-Goetz, Diane.
OCLC.
San Diego, Calif. ; London : Academic Press,
c1994.
"Published under the auspices of OCLC Online Computer Library Center, Inc."
Online bibliographic searching.
Subject headings.
Online catalogs