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070  National Agricultural Library Call Number (R)

Input Standards

Required if applicable/Optional
1st Indicator  Existence in NAL collection
blank character No information provided
0 Item is in NAL
1 Item is not in NAL
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
ǂa Classification number (R) Mandatory/Mandatory
ǂb Item number (NR) Required if applicable/Required if applicable
ǂ8 Field link and sequence number (R) Optional/Optional


National Agricultural Library (NAL) uses field 070 for NAL call numbers. The call number may be either complete or incomplete. You may use field 070 for transcribing NAL copy.

1st Indicator

Existence in NAL collection. Whether the item is in NAL's collection.

blank character

No information provided. Obsolete. Do not use.


Item is in NAL


Item is not in NAL

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank ( blank character ).

blank character



ǂa Classification number

The classification number portion of the NAL number.

070 0   HD3492.H8L3
070 0   aZ733.N3A57
ǂb Item number

The NAL item number.

070 0   105.2 ǂb W122
070 0   105.2 ǂb W122 No. 71-5
070 0   S562.5.M3 ǂb 1969
ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields.


For indexing and searching information, see Searching WorldCat Indexes, field 070.

This page last revised: August 19, 2016