An index with an independent numbering scheme is considered a separate serial and described in a separate bibliographic record.
For indexes described in separate bibliographic records, the numbering scheme of the index is recorded in the holdings record for the index. For example, the library holds 1975-1977 of the Index of Title E where the Index is represented by its own bibliographic record. Record holdings as:
| 866 | 4 | 1 | ‡8 0 ‡a 1975-1977 |
An index that is not described in a separate bibliographic record but contained within a basic bibliographic unit (i.e., one of the segments of the publication sequence of a serial as designated by the publisher) is not recorded in the holdings record. The existence of such an index is usually noted in the bibliographic record.
An index that is not described in a separate bibliographic record and not contained within a basic bibliographic unit is recorded in the holdings record in field 868. Generally, cumulative indexes are not compressed.
| 866 | 4 | 1 | ‡8 0 ‡a v.1(1900)-v.12(1912), |
| 866 | 4 | 1 | ‡8 0 ‡a v.14(1914), |
| 866 | 4 | 1 | ‡8 0 ‡a v.18(1918)-v.24(1924) |
| 867 | 4 | 1 | ‡8 0 ‡a v.14:suppl |
| 868 | 4 | 1 | ‡8 0 ‡a v.1/12(1900/1912) |
| 868 | 4 | 1 | ‡8 0 ‡a v.13/24(1913/1924) |