Green, W. J. <br/><br/>
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 .
<br/><br/><label>LCCN: </label>203207 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fitopatología  Agricultura -- Plagas