Não informado. (1968). Chem 13 News. University of Waterloo, Department of Chemistry.
Citace podle Chicago (17th ed.)Não informado. Chem 13 News. Waterloo, Canada: University of Waterloo, Department of Chemistry, 1968.
Citace podle MLA (8th ed.)Não informado. Chem 13 News. University of Waterloo, Department of Chemistry, 1968.
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