Medical subject headings.
National Library of Medicine (U.S.).Medical Subject Headings Section.cn
Bethesda, Md. : Medical Subject Headings Section, Library Operations, National Library of Medicine ; [Springfield, Va. : National Technical Information Service, distributor,
Description based on: 1981; title from cover.
Vols. for 19   -1977, 1979-1981, 1984-    issued by National Library of Medicine, Medical Subject Headings Section; 1978, 1982-1983 by National Library of Medicine.
Companion to: Medical subject headings. Tree structures; Medical subject headings. Tree annotations; and to: Permuted medical subject headings.
Issues for 1983-    supplemented by: Medical subject headings. Supplementary chemical records.
Subject headings
Medical subject headings. Supplementary chemical records
Medical subject headings. Tree structures
Medical subject headings. Tree annotations
Permuted medical subject headings