Não informado. (1951). Export review of the British Drug and Chemical Industries. Morgan Brothers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Export Review of the British Drug and Chemical Industries. London: Morgan Brothers, 1951.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Export Review of the British Drug and Chemical Industries. Morgan Brothers, 1951.
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