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Start Over You searched for: Authors National Library of Medicine (U.S.) Remove constraint Authors: National Library of Medicine (U.S.) Collections NLM Publications and Productions Remove constraint Collections: NLM Publications and Productions Languages English Remove constraint Languages: English Subjects United States Remove constraint Subjects: United States Dates by Range 1950-1999 Remove constraint Dates by Range: 1950-1999
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11. National Library of Medicine classification: a scheme for the shelf arrangement of library materials in the field of medicine and its related sciences

nlm:nlmuid-100901931-bk

18. National Library of Medicine classification: a scheme for the shelf arrangement of books in the field of medicine and its related sciences

nlm:nlmuid-0101314-bk

34. National Library of Medicine classification: a scheme for the shelf arrangement of library materials in the field of medicine and its related sciences

nlm:nlmuid-9440818-bk