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Dyfyniad Arddull ChicagoD S Prasada Rao. FAO Economic and Social Development Paper N.112: Intercountry Comparisons of Agricultural Output and Productivity. Rome: FAO, 1993.
Dyfyniad MLAD S Prasada Rao. FAO Economic and Social Development Paper N.112: Intercountry Comparisons of Agricultural Output and Productivity. Rome: FAO, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.