Não informado. (1969). Organic Preparations and Procedures International. Organic Preparations and Procedures.
Citace podle Chicago (17th ed.)Não informado. Organic Preparations and Procedures International. Newton, Mass: Organic Preparations and Procedures, 1969.
Citace podle MLA (8th ed.)Não informado. Organic Preparations and Procedures International. Organic Preparations and Procedures, 1969.
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