Relation of woolly apple aphis to perennial canker infection with other notes on the disease
Childs, Leroy, Branch, River Hood
Relation of woolly apple aphis to perennial canker infection with other notes on the disease - Corvallis 1929 - 1-31 p. - Apple, Disease Oregon Agricultural Experiment Station. Station Bulletin No. 243 .
Relation of woolly apple aphis to perennial canker infection with other notes on the disease - Corvallis 1929 - 1-31 p. - Apple, Disease Oregon Agricultural Experiment Station. Station Bulletin No. 243 .