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645 - SERIES TRACING PRACTICE (R)
A code that indicates a specific organization's tracing practice for a series named in the 1XX field of an established heading record for a series. The volumes/dates and/or the institution/copy identification to which the tracing practice applies may also be present.
Indicators
- First - Undefined
- # - Undefined
- Second - Undefined
- # - Undefined
Subfield Codes
- $a - Series tracing practice (NR)
- t - Traced as a series added entry
": Traced" may be generated for display.
- n - Not traced as a series added entry
": Untraced" may be generated for display.
- t - Traced as a series added entry
- $d - Volumes/dates to which tracing practice applies
(NR)
A statement that is used only when the data contained in subfield $a does not apply to all items in the series. Applies to: may be generated for display. - $5 - Institution/copy to which field applies (R) See Control Subfields
- $6 - Linkage (NR) See Control Subfields
- $8 - Field link and sequence number (R) See Control Subfields
Examples
645 |
##$at$5DLC |
645 |
##$at$ditems cataloged after Dec. 31 1980 |
645 |
##$an$ditems cataloged before Jan. 1 1981 |
645 |
##$an$5DLC |
645 |
##$an$5DLC$5MH |

