(2005). Appropriate technology: Small producers and food security.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAppropriate Technology: Small Producers and Food Security. 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAppropriate Technology: Small Producers and Food Security. 2005.
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