RT Book, Whole DB /z-wcorg/ DS http://worldcat.org ID 5363484 LA English T1 Research report on subject heading patterns in OCLC monographic records A1 O'Neill, Edward T.,, Aluri, Rao,, OCLC., Research Department., Research and Development Division., PB OCLC, Research Dept., Research and Development Division PP Columbus, Ohio YR 1979 AB This investigation examines the characteristics of subject headings occurring in cataloging records. The study analyzes a sample of 33,455 monographic records taken from the OCLC database. The sample contained a total of 50,213 subject headings, 94% of which were Library of Congress (LC) subject headings. Each record had an average of 1.4 LC subject headings. However, 18.6% of the records did not have any LC subject heading assigned to them.