Não informado. (1925). Industrial chemist and chemical manufacturer. Tothill Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Industrial Chemist and Chemical Manufacturer. London: Tothill Press, 1925.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Industrial Chemist and Chemical Manufacturer. Tothill Press, 1925.
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