Não informado. (1955). Pesticides abstracts and news summary. Ministry of Overseas Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Pesticides Abstracts and News Summary. London: Ministry of Overseas Development, 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Pesticides Abstracts and News Summary. Ministry of Overseas Development, 1955.
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