Dennis J Alexander & Iiaria Capua. (2009). Avian influenza and newcastle disease: A field and laboratory manual. Italy.
Dyfyniad Arddull ChicagoDennis J Alexander and Iiaria Capua. Avian Influenza and Newcastle Disease: A Field and Laboratory Manual. Italy, 2009.
Dyfyniad MLADennis J Alexander and Iiaria Capua. Avian Influenza and Newcastle Disease: A Field and Laboratory Manual. Italy, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.