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Dyfyniad Arddull ChicagoZdenka Svobodova. EIFAC Technical Paper N.54: Water Quality and Fish Health. Rome: FAO, 1993.
Dyfyniad MLAZdenka Svobodova. EIFAC Technical Paper N.54: Water Quality and Fish Health. Rome: FAO, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.