摘要:T HIS paper is a review of recent advances in the bibliographic control of medical literature, 1954 through 1958. The wealth of material has made some selection necessary and we have tried to include only significant advances: in some instances only one or two titles are mentioned to exemplify a type of control tool. Continuations or revisions of works started before 1954 have generally been excluded. Advances are taken to include three categories: new types of tools, new tools of standard types, and significant changes in the well established older controls. With few exceptions, separates only have been considered. While medical literature is the target, peripheral areas have not been wholly neglected, and the overriding criterion for inclusion is use in medical library service.