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Dyfyniad Arddull ChicagoFAO. FAO Agriculture Series; N33: The State of Food and Agriculture2001; CD-ROM Inside. Rome: FAO, 2001.
Dyfyniad MLAFAO. FAO Agriculture Series; N33: The State of Food and Agriculture2001; CD-ROM Inside. Rome: FAO, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.