One-time-only serials (particularly but not limited to directories) may be ordered for Reference by any subject selector. The selector should also notify the ZZR selector who will provide any follow-up necessary. A title cannot be ordered more than once every four years.
This policy on one-time-only serial orders applies only to materials of a Reference nature, housed in the Reference collection. It is an exception to the general rule that monographic funds are not intended for the purchase of serials, and that material of a serial nature of importance to the collection should be on subscription and subject to the drop-add policy.
M. Vocino & M. Keefe, February 2, 2009