(1936). Vol. 14, № 22 (Vol. 28, № 39); Industrial and Engineering Chemistry. New Edition. 1936.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVol. 14, № 22 (Vol. 28, № 39); Industrial and Engineering Chemistry. New Edition. 1936, 1936.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVol. 14, № 22 (Vol. 28, № 39); Industrial and Engineering Chemistry. New Edition. 1936, 1936.
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