摘要：T HE organization of library materials differs from one subject field to another; some of the differences are subtle, others involve basic principles. The differences that exist among these subject fields are not often mutually known. It is with the idea that such mutual knowledge is profitable that this paper is presented. It attempts to review, as the title states, the progress and the problems of medical library cataloging and classification during the ten-year period, 1946-1956.
