http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Digest of comments on the Pharmacopoia of the United States of America and on the National Formulary for the calendar year ending December 31 1920
Hygienic Laboratory bulletin 131; Digest of comments on Pharmacopoeia of United States and national formulary for 1920
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ProQuest U.S. Serial Set Digital Collection