Umali-Deininger, D., & Schwartz, L. A. (1994). Public and private agricultural extension: Beyond traditional frontiers. World Bank.
Dyfyniad Arddull ChicagoUmali-Deininger, Dina, and Lisa A. Schwartz. Public and Private Agricultural Extension: Beyond Traditional Frontiers. Washington, DC: World Bank, 1994.
Dyfyniad MLAUmali-Deininger, Dina, and Lisa A. Schwartz. Public and Private Agricultural Extension: Beyond Traditional Frontiers. World Bank, 1994.
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