Using subfields $n & $p in the 245 field

Subfields '$n' (number of part or section) and '$p' (name of part or section) often appear in the 245 field for video recordings, where they are used to identify episodes or seasons of television series.

These subfields are also found in MARC records for books when the part name (the "title" of a particular volume) doesn't make grammatical sense when separated from the common (i.e. series) title in the 245 entry, and/or when the volume has ONLY a number, i.e. "Vol. XVII" as its individual title.

Please note that using these subfields in 245 does not eliminate the need to record the series title in field 490, and/or to trace the series in an 8xx field.

Punctuation, capitalization and field order rules for these subfields are not intuitive. Here are the basics:

1. Subfields '$n' and '$p' are considered part of the Title Proper. This means they come BEFORE subfields '$b' (subtitle) or '$h' (material type aka GMD).

2. The first word of both subfields '$n' and '$p' is always capitalized

3. Punctuation:

a. Subfield '$n' is always preceded by a period
b. Subfield '$p' is preceded by a period if it follows subfield '$a' but is preceded by a comma if it follows subfield '$n'
4. Consider repeating the contents of subfield '$p' in a 246 field if you think patrons may search by those words

Examples:

=245 10 $a Inside the jewelry box. $n Volume 2 : $b a collector's guide to costume jewelry identification and values / $c Ann Mitchell Pitman. (Subfield n is always preceded by a period. Subfield n comes before subfield b)

=245 00 $a Last of the summer wine. $p Vintage 1979 $h [videorecording] / $c written by Roy Clarke ; directed and produced by Sydney Lotterby. (Subfield $p is preceded by a period because it follows subfield $a. Subfield $p comes before the GMD)

245 00 $a Geochemical data from the departments of Choco and Antioquia, Colombia. $n Part B, $p Printout of analytical data $h [microform] / |c by U.S. Geological Survey Center for... (Subfield $n is always preceded by a period. Subfield $p is preceded by a comma here because it follows subfield $n.)

=245 00 $a Signing time! $n Volume 4, $p Family, feelings & fun $h [videorecording] / $c a Two Little Hands production ; created by Rachel de Azevedo Coleman.
=246 3 $a Family, feelings & fun
=246 3 $a Family, feelings and fun (Subfield p is repeated in a 246 because patrons may search by this part name.)

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