USE OF PUNCHED CARDS In PREPARATION OF LISTS OF PERIODICALS

Scientific and technical periodicals and other serial publications are purchased by the Main Library at Harwell for its own collections and for those of twenty‐two divisional libraries. Subscriptions are placed through a bookseller for all serials other than Government publications which are purchased direct from HMSO. In addition, a number of journals are presented to the library from various sources. All serial publications are recorded in the library catalogues and individual copies are checked in by the Main Library using conventional visible index equipment. For quick reference a strip index of holdings and locations is kept in the Reading Room of the library.