Шаблон:Merck12th
Susan Budavari, ур. (1996). The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (12th изд.). Merck. ISBN 0911910123.
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Susan Budavari, ур. (1996). The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (12th изд.). Merck. ISBN 0911910123.