http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Collection development manual of the National Library of Medicine, 1985
Technical Services Division, National Library of Medicine.
Spine title: NLM collection development manual-1985.
Revised edition of: Scope and coverage manual of the National Library of Medicine. 1977.
Scope and coverage manual of the National Library of Medicine