TY  - BOOK
AU  - Green, W. J.
AU  - Gossard, H. A.
AU  - Selby, A. D. 
TI  - Calendar for the treatment of plant diseases and insect pests
CY  - Wooster, Ohio
PB  -  Agricultural Experiment Station
KW  - Fitopatología  Agricultura
KW  -  Plagas
ER  -