1. COUNCIL ON DRUGS
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4. Goodman, L. S. and Gilman, A.: The Pharmacological Basis of Therapeutics. Ed. 2. New York, The Macmillan Company, 1956.
5. Osol, A. and Farrar, G. E.: The Dispensatory of the United States of America. Philadelphia, J. B. Lippincott Company, 1950.