Não informado. (1983). International journal for development technology. International Centre for Technical Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Journal for Development Technology. Beirut: International Centre for Technical Research, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Journal for Development Technology. International Centre for Technical Research, 1983.
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