MARC 300 $3

[kiegel]

For mixed materials, repeated 300 fields with $3 (Materials specified) generate separate instances. But there is only one manuscript collection: it doesn't have multiple instances. Instead $3 is used to describe the extent of portions of a heterogeneous whole. There should be a single bf:Instance.

300 |3 Sound recordings: |a 2 sound cassettes (ca. 1 hr., 10 min.) : |b analog, mono. 300 |3 Transcript: |a 10 leaves.

produces:

<http://example.org/99155169990001452instance23> a bf:Archival,
        bf:Collection,
        bf:Instance ;
    bf:extent "Sound recordings: 2 sound cassettes (ca. 1 hr., 10 min.) :" ;
    bf:instanceOf <http://example.org/99155169990001452> ;
    bf:instanceTitle <http://example.org/99155169990001452title27> ;
    ....

<http://example.org/99155169990001452instance24> a bf:Instance ;
    bf:extent "Transcript: 10 leaves." ;
    bf:instanceOf <http://example.org/99155169990001452> ;
    bf:instanceTitle <http://example.org/99155169990001452title26> .

(OCLC # 229456872 )