The Indexing Branch of the Technical Services Division selects, indexes, and inputs records into ISIS , NAL's integrated library system. Approximately 900 journals on agriculture and related subjects are indexed. Processing priority is given to USDA , state experiment station, state cooperative extension service, and other U.S. published materials.
Secondary emphasis is placed on foreign imprints.
Contributed citations are the basis for a large variety of products that are used both nationally and internationally. NAL staff work cooperatively with CAB International to develop and maintain the CAB Thesaurus . Additional subject access is provided through the use of alphanumeric codes. The current edition provides information on the abbreviated title, ISSN, NAL call number, place of publication, coverage, and a listing of serial titles abstracted. NAL uses optical scanning technology to expedite the inclusion of author abstracts into the database.