HelmKamp, G. (1964). Selected expenments in organic chemistry. San Franrcisco:.
Trích dẫn kiểu ChicagoHelmKamp, G.K. Selected Expenments in Organic Chemistry. San Franrcisco:, 1964.
Deismireacht MLAHelmKamp, G.K. Selected Expenments in Organic Chemistry. San Franrcisco:, 1964.
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