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Dyfyniad Arddull ChicagoFAO. FAO Legislation Study N.54: Legislation Governing Food Control Certification: Authorities and Producers. Rome: FAO, 1995.
Dyfyniad MLAFAO. FAO Legislation Study N.54: Legislation Governing Food Control Certification: Authorities and Producers. Rome: FAO, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.