MARC21 – application in the Swiss National Library NL
648 - Subject Added Entry-Chronological Term (R)
First Indicator |
Second Indicator |
| # - No information provided | 7 - Source specified in subfield $2 |
Subfield codes |
|
| $a - Chronological term (NR) | $9 - Quelle der angereicherten Daten (R) |
| $2 - Source of heading or term (NR) |