070 - National Agricultural Library Classification Number (R)
MARC 21 Community Information - Full
January 2000
First Indicator
Undefined
# - Undefined
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Second Indicator
Undefined
# - Undefined
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Subfield Codes
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$a - Classification number (R)
$b - Item number (NR)
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$8 - Field link and sequence number (R)
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FIELD DEFINITION AND SCOPE
Library of Congress classification number or another number assigned by the National
Agricultural Library.
NAL assigns classification numbers from the Library of Congress Classification
or LC Classification-Additions and Changes; two publications that are
maintained by the Library of Congress.
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
■ INDICATORS
- Both indicator positions are undefined; each contains a blank (#).
■ SUBFIELD CODES
$a - Classification number Library of Congress classification number or another number assigned by NAL. The
subfield may also contain a prefix.
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| 110 |
2#$aGuyan Soil Conservation District. |
| 070 |
##$aS599$b.G89
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$b - Item number NAL item number or other designation.
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| 110 |
2#$aAutomated Systems Users Group. |
| 070 |
##$aCominfo$b608
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$8 - Field link and sequence number
INPUT CONVENTIONS
Punctuation - Field 070 does not end in a period unless the field ends in an abbreviation,
initial/letter, or other data that ends in a period.
Capitalization - Alphabetic characters, excluding most of those occurring in a prefix, are usually
uppercase.