Não informado. (1964). International agricultural development. International Agricultural Development Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Agricultural Development. Washington: International Agricultural Development Service, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Agricultural Development. International Agricultural Development Service, 1964.
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