Schumann, Gail L. <br/><br/>
Plant diseases :  their biology and social impact / 
Gail L. Schumann. 
 - Fourth printing, 2003. 
 - viii, 397 pages :  illustarions ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0890541167 9780890541166 :  US$55 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant diseases and social impacts.