| First Indicator | Second Indicator |
|---|---|
| Undefined # - Undefined |
Undefined # - Undefined |
| Subfield Codes | |
|---|---|
|
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Call number assigned by the National Agricultural Library (NAL) to a series when all or part of the series is classified as a collected set or with the main series (646, Series Classification Practice, subfield $a, code c or m).
Used only for class numbers and call numbers assigned by NAL. May also contain NAL accession numbers for visual materials.
May also contain the volumes/dates to which the number applies. Varying numbers for different ranges of volumes/dates within a series are contained in separate 070 fields.
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. Both schemes are still used because some series title changes have been kept with the USDA scheme call number.
$a - Classification number
| 070 | ##$a99.8$bF76322 [Number assigned from the USDA library scheme] |
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$b - Item number
| 070 | ##$aQH545.A$bT6 [Number assigned from the LC classification scheme] |
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$d - Volumes/dates to which call number applies
Statement used only when the call number does not apply to all items of the series. Applies to: may be generated for display.
May also contain a copy (or set) number.
$0 - Authority record control number or standard number
See description of this subfield in Appendix A: Control Subfields.
$1 - Real World Object URI
See description of this subfield in Appendix A: Control Subfields.
$6 - Linkage
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number
See description of this subfield in Appendix A: Control Subfields.
Order - The 070 field for a current call number precedes the 070 field for an earlier call number.
Capitalization - Alphabetic characters in the classification portion of the field are usually uppercase.