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Authors
- National Institutes of Health (U.S.)1
- National Library of Medicine (U.S.)31
- National Library of Medicine (U.S.) author, issuing body.1
- National Library of Medicine (U.S.) author.1
- National Library of Medicine (U.S.). Board of Regents.5
- National Library of Medicine (U.S.). Division of Extramural Programs.1
- National Library of Medicine (U.S.). History of Medicine Division, author, issuing body.1
- National Library of Medicine (U.S.). Outreach Planning Panel.1
- National Library of Medicine (U.S.). Reference Services Division.3
- National Library of Medicine (U.S.). Technical Services Division.2