Holdings are compressed whenever possible. A hyphen is used to indicate compression.
OPTIONALLY, cataloger may decide not to compress in order to bring out issue details. This is more likely to occur with Beinecke and other special collections.
If there are no gaps between recorded pieces at the lowest hierarchical level, holdings are compressed in 86x. Compression may occur even if there are nongap breaks
Non-compressed:
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.1(1976:Jan.) |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.2(1976:Feb.) |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.3(1976:Mar.) |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.4(1976:Apr.), |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.6(1976:June), |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.8(1976:Aug.) |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.9(1976:Sept.) |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.10(1976:Oct.) |
Compressed form:
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.1(1976:Jan.)-v.1:no.4(1976:Apr.), |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.6(1976:June), |
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.8(1976:Aug.)-v.1:no.10(1976:Oct.) |
If within a level there are no gaps, generally eliminate any unnecessary, subordinate levels of enumeration. Use judgment in eliminating subordinate levels of detail if to do so would cause an unacceptable level of ambiguity.
EXAMPLE:
Compressed form with subordinate levels recorded:
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.1(1976:Jan.)-v.1:no.12(1976:Dec.) |
With subordinate levels eliminated:
| 866 | 4 | 1 | ‡8 0 ‡a v.1(1976) |
"If it is necessary to record both first-level and subsequent level enumeration in the holdings statement, repeat all levels of enumeration at the beginning and end of each range held." (ANSI p. 29) In the following example, a gap occurs in the subsequent enumeration level of v. 2, so both ends of the range in the first 866 repeat all levels of enumeration, even though v.1 is complete. There are no gaps in volumes 3, 4, and 5, so the subsequent levels of enumeration are eliminated when the compressed form is recorded as a summary statement.
| 866 | 4 | 1 | ‡8 0 ‡a v.1:no.1(1976:winter)-v.2:no.3(1976:fall), |
| 866 | 4 | 1 | ‡8 0 ‡a v.3(1978)-v.5(1980) |
"For both numbered and unnumbered first-level series designators, record the series level as the first level of enumeration. When the first level is a series, always record the second-level enumeration along with the first level." Note that the first level is separated from the second level with a colon. See also the example under 11i.
| 866 | 4 | 1 | ‡8 0 ‡a new ser.:v.1(1999) |
Although the standard now permits open-ended holdings statements, Yale policy is not to use such statements with the exception of e-journals.