Abstract
The Guide to reference material can be described as an annotated subject bibliography, using UDC. New editions of each volume in a 5-6 year cycle are favoured, rather than overall supplements between editions. The problems of co-operation, collection and sifting material, optimum length of volumes, pointed annotations, indexing of titles, the spate of new material, and the demands for inclusion of new subjects are discussed, as well as future plans for the Guide. There is a continuing place for manual as well as computer searching for information.
