Rosy aphis in relation to abnormal apple structures
Parrott, P.J., Hodgkiss, H.E., Hartzell, F.Z.
Rosy aphis in relation to abnormal apple structures - Geneva 1919 - 1-29 p. - Apple New York Agricultural Experiment Station. Bulletin No. 66 .
Rosy aphis in relation to abnormal apple structures - Geneva 1919 - 1-29 p. - Apple New York Agricultural Experiment Station. Bulletin No. 66 .