Roberts, Daniel A.  1922- <br/><br/>
Fundamentals of plant pathology 
Daniel A. Roberts, Carl W. Boothroyd 
 - San Francisco  W. H. Freeman  1972 
 - xii, 402 p.  ill.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant diseases