LC Guidelines:  Tracings and References - General Information - 5XX Fields

NACO:

Subfield Codes

$i - Relationship information may be used in either AACR2 or RDA NARs to indicate relationships between authorized access points.

$w - Control subfield in 5XX See Also From Tracing fields

____/0  Special relationship

Use code n (Not applicable) when neither code a nor b nor r applies and a subsequent character position in subfield $w is coded.  In other respects NACO participants should follow the guidelines in the LC usage section for this subfield.

 

____/1  Tracing use restriction

Use code n (Not applicable) when a subsequent character position in subfield $w is coded.  In other respects NACO participants should follow the guidelines in the LC usage section for this subfield.

 

____/2  Earlier form of heading

Use code n (Not applicable) when a subsequent character position in subfield $w is coded.  In other respects NACO participants should follow the guidelines in the LC usage section for this subfield.

 

____/3  Reference display

Code n (Not applicable) allows the generation of a cross reference and need not be coded in subfield $w/3.  In other respects NACO participants should follow the guidelines in the LC usage section for this subfield.

 

SACO:

All SACO participants should follow the LC Subject guidelines which follow.


LC:

Subfield Codes

$i - LC catalogers applying RDA instructions may use $i to provide relationship information in either AACR2 or RDA NARs to indicate relationships between authorized access points.

NAMES/SERIES:

$w - Control subfield in 5XX See Also From Tracing fields

____/0  Special relationship

r - must be used when subfield $i or $4 are used in NARs.

Do not use the following codes:

d - Acronym

f  - Musical composition

h - Narrower term

i  - Reference instruction phrase in subfield $i

t  - Immediate parent body

Codes d and f may occur in LC records created before 1981.

 

____/1  Tracing use restriction

Do not use the following codes:

a - Name reference structure only

e - Name and series reference structures

b - Subject reference structure only

f  - Subject and series reference structures

c - Series reference structure only

g - Name, subject, and series reference structures

d - Name and subject reference structures

 

Code b may occur in LC records created before 1988.

 

____/2  Earlier form of heading

Do not use the following codes:

a - Pre-AACR 2 form of heading (national name authority file)

e - Earlier established form of heading (national authority file)

o - Earlier established form of heading (other authority file)

 

____/3  Reference display

Do not use the following codes:

b - Reference not displayed, field 664 used

d - Reference not displayed, field 665 used

LC has not used field 665 since mid-Feb. 1981.  Records created before that time may contain code d in subfield $w/3.

Use code a (Reference not displayed) or c (Reference not displayed, field 663 used) when appropriate for suppressing a cross reference display.

 

SUBJECTS:

$w - Control subfield in 5XX See From Tracing fields

____/0  Special relationship

Use code g (Broader term) or code n (Related term) in this position.

 

____/1  Tracing use restriction

Use code n (Not applicable) in this position.

 

____/2  Earlier form of heading

Use code n (Not applicable) in this position.

 

____/3  Reference display

Use code n (Not applicable) in this position.

 

For more information on LC Guidelines, select:

Introduction  (LC Guidelines)

See also:

LC Guidelines

MARC 21 Format for Authority Data:  Contents