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Dyfyniad Arddull ChicagoDahal, Khagendra Pd, and Anit Kr Mishra. Cost-benefit Analysis of Pesticide Use from Farmers' Health Perspective. 2008.
Dyfyniad MLADahal, Khagendra Pd, and Anit Kr Mishra. Cost-benefit Analysis of Pesticide Use from Farmers' Health Perspective. 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.