John Charles Walker <br/><br/>
Diseases of Vegetable Crops 

 - New York  Mcgraw-hill book co.inc  1952 
 - 529p 
<br/><br/>John Charles Walker: Diseases of Vegetable Crops.  New York.  Mcgraw-hill book co.inc, 1952.--(635.192WAL)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>635.192  / COAC