Não informado. (1926). Annual survey of american chemistry. National Research Council, Division of Chemistry and Chemical Technology.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Annual Survey of American Chemistry. New York: National Research Council, Division of Chemistry and Chemical Technology, 1926.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Annual Survey of American Chemistry. National Research Council, Division of Chemistry and Chemical Technology, 1926.
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