Van der Plank, J. E.
Plant Diseases: Epidemics and Control - 3rd - New York Academic Press, Inc. 1972 - 349
Pathology PLANT DISEASES PATHOGENS EPIDEMICS
Plant Diseases: Epidemics and Control - 3rd - New York Academic Press, Inc. 1972 - 349
Pathology PLANT DISEASES PATHOGENS EPIDEMICS