Mechanization of library procedures in the medium-sized medical library. XII. An information retrieval system: a combination of a manual selective dissemination of information, and a personal file indexing system by computer.

The introduction of a manual selective dissemination of information system with a computer-based personal index service into a Medical School Library is described. An account is given of the selection of participants, the development and maintenance of search profiles, the daily procedures, the forms and outputs of the system, and the computer index maintenance system. The costs of both the manual citation selection system and the computer index maintenance system are reported.