Schumann, Gail L <br/><br/>
Plant diseases  their biology and social impact 

 - Lucknow  International Book Distr.  1993 
 - 397 p. 
<br/><br/><label>ISBN: </label>8185860076 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant dise4ases
<br/><br/><label>Dewey Class. No.: </label>632.3  / SCH