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This book is the outgrowth of a lithoprinted manual published originally by the author in 1939 for use in a course in vegetable diseases offered to graduate students. The number of research contributions in this field since that date is large, which alone necessitated revision. Moreover, the extension and specialization of vegetable culture in the United States has increased the pathological problems on the one had, while the number of technical specialists, ...
This book is the outgrowth of a lithoprinted manual published originally by the author in 1939 for use in a course in vegetable diseases offered to graduate students. The number of research contributions in this filed since that date is large, which alone necessitated revision. Moreover, this extension and specialization of vegetable culture in the United States has increased the pathological problems on the one hand, while the number of technical specialists, ...