Medical subject headings.

Print ceases at v.48 (2007), then becomes online only.

Medical subject headings, tree annotations, 1978 : technical notes, Medlars indexing instructions /

"PB 271 246."

Medical subject headings:

Mode of access: Internet.

Merck's 1905 manual of the materia medica : a ready-reference pocket book for the physician and surgeon containing names of the chemicals and drugs ... /

Mode of access: Internet.