Existence in NAL collection
0 - Item is in NAL
1 - Item is not in NAL
# - Undefined
|$a - Classification number (R)
$b - Item number (NR)
|$8 - Field link and sequence number (R
Classification or call number that is assigned by the National Agricultural Library (NAL).
May also contain NAL accession numbers for visual materials.
Prior to 1965, NAL used a USDA library classification scheme. In 1965, NAL began using the Library of Congress Classification for all newly-cataloged materials. Serial-like items have retained the old call number whenever possible; thus, both schemes are still in use. NAL also assigns sequential accession numbers to dissertations and abstracts.
Prefixes may occur in NAL call numbers. "A" specifies a USDA publication in the old USDA scheme; "a" specifies a USDA publication in the LC classification scheme; "R" specifies a rare book; "J" specifies a juvenile book; and "Fo" specifies a folio publication.
[Number assigned to a translation.]
[Number assigned from the USDA library scheme.]
[Number assigned from the LC classification scheme.]