Rosy aphid in relation to spray practices in 1929
Parrott, P.J., Glasgow, H.
Rosy aphid in relation to spray practices in 1929 - Geneva 1930 - 1-32 p. - Spray New York Agricultureal Experiment Station. Bulletin No. 582 .
Rosy aphid in relation to spray practices in 1929 - Geneva 1930 - 1-32 p. - Spray New York Agricultureal Experiment Station. Bulletin No. 582 .