Code 750 - Linking Heading - Topical subject
Repeatable for alterantive script forms.
Indicators not defined
Subfields:
a - Entry element (NR)
x - Topical subdivision (R)
y - Geographical subdivision (R)
z - Chronological subdivision (R)
Control subfields:
2 - Subject system code (NR)
3 - Record number (NR)
7 - Script (NR)
8 - Language of cataloging (NR)
Code 801 - Originating source
Mandatory, repeatable.
First Indicator blank
Second Indicator: Function indicator
0=Original cataloging agency
1=Transcribing agency
2=Modifying agency
3=Issuing agency
Subfields:
a - Country (NR)
b - Agency (NR)
c - Date of transaction (NR)