Incidence and development of apple scab on fruit during the late summer and
Bratley, C.O.
Incidence and development of apple scab on fruit during the late summer and - Washington 1937 - 1-46 p. - United States Department of A .
Incidence and development of apple scab on fruit during the late summer and - Washington 1937 - 1-46 p. - United States Department of A .