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Dyfyniad Arddull ChicagoFAO. FAO Fisheries Technical Paper N.347: Reference Points for Fisheries Management. Rome: FAO, 1995.
Dyfyniad MLAFAO. FAO Fisheries Technical Paper N.347: Reference Points for Fisheries Management. Rome: FAO, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.