Reference Serials Available to Purchase

“Reference Serials” intends to provide in‐depth, evaluative reviews of abstracting services, indexes, serial bibliographies, yearbooks, directories, almanacs and other continuations which would normally be housed in reference collections. For the purposes of this column, reference serials are defined as materials which meet two rather flexible requirements: 1) they must be useful as reference sources, and 2) they must be issued as serials or be titles superseded periodically by new editions.