863-865 - Cumulations:

Cumulations are treated the same as other material in the holdings statement. For example, a monthly publication has eleven regular issues and a twelfth issue that takes the place of the eleven separately issued numbers. The combined volume replaces the individual numbers in the enumeration and chronology subfields. If the individual issues are retained as well, they are treated as a different copy. Separate holdings records are created: one for the combined copy and one for the individual issues.