Are Library of Congress subject headings used?
Library of Congress subject headings are not used. The 650 \4 fields contain the subject categories and descriptors used by OSTI. Keywords are placed in the 653 field. While these subject terms may not be indexed in some library catalog subject heading searches, they should work in keyword searches. Many systems do not support keyword access to 650 _4 nor to the 653 fields. Libraries might consider changing 650 headings to 690s, (local subject added entry – topical term) if that will achieve keyword indexing in the local catalog. • How are personal names handled? OSTI is not able to perform authority work on the personal names of the authors of reports in the Information Bridge. For this reason, personal names are placed in the 720 field – added entry – uncontrolled name. However, OSTI is aware that many libraries do not support the 720 field. In many cases, the 720 data is not loaded and/or does not display in library catalogs. Since personal names can be very important in identifying
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