Image caption on page 96 of the book US National Library of Medicine: "The Medical Subject Headings (MeSH) vocabulary was quickly adopted by medical libraries for cataloging their own collections. MEDLARS - the Medical Literature Analysis and Retrieval System - was an equally significant accomplishment for the library. Establishing an online version of the system as MEDLINE (MEDLARS Online), in the early 1970s, opened it up to more medical librarians around the country, and later to the world. Together MeSH and MEDLINE proved to be invaluable tools for medical research. By the 1970s, staff members of the library and in medical libraries around the country were entering MeSH vocabulary into networked MEDLINE computer terminals to find relevant journal articles to answer patron inquiries both onsite and remotely. Indexers required in-depth knowledge in a wide variety of disciplines. Staff members might be called upon to review literature from any branch of science or medicine, and they often kept at their desks reference copies of textbooks, medical dictionaries, and foreign language dictionaries."
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