AID reference center and technical assistance bureau. (1973). AID research abstracts. Agency for International Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAID reference center and technical assistance bureau. AID Research Abstracts. Washington: Agency for International Development, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAID reference center and technical assistance bureau. AID Research Abstracts. Agency for International Development, 1973.
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