Cowan, F. F. (1978). Pharmacology for the dental hygienist ; for students and practitioners. Lea & Febiger.
Lua i Stíl Chicago (17ú heag.)Cowan, Fred F. Pharmacology for the Dental Hygienist ; for Students and Practitioners. Philadelphia: Lea & Febiger, 1978.
Lua MLA (9ú heag.)Cowan, Fred F. Pharmacology for the Dental Hygienist ; for Students and Practitioners. Lea & Febiger, 1978.
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