Koppen, B. C. P. v. (1998). More jobs per drop: Targeting irrigation to poor women and men. Royal Tropical Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKoppen, B. C. P. van. More Jobs Per Drop: Targeting Irrigation to Poor Women and Men. Amsterdam: Royal Tropical Institute, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKoppen, B. C. P. van. More Jobs Per Drop: Targeting Irrigation to Poor Women and Men. Royal Tropical Institute, 1998.
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