Calendar for the treatment of plant diseases and insect pests /
Green, W. J.
Calendar for the treatment of plant diseases and insect pests / W. J. Green, A. D. Selby and H. A. Gossard - Wooster, Ohio : Agricultural Experiment Station - p. 485-516 - Ohio. Agr. Exp. Sta. Bull; 309 .
203207
Fitopatología Agricultura -- Plagas
Calendar for the treatment of plant diseases and insect pests / W. J. Green, A. D. Selby and H. A. Gossard - Wooster, Ohio : Agricultural Experiment Station - p. 485-516 - Ohio. Agr. Exp. Sta. Bull; 309 .
203207
Fitopatología Agricultura -- Plagas