Schumann, Gail L. <br/><br/>
Plant diseases:  their biology and social impact / 
by Gail L. Schumann 
 - Lucknow :  International Book Distributing Co,  1991. 
<br/><br/><label>ISBN: </label>8185860076 
<br/><br/><label>Subjects--Index Terms: </label>Bota Ny Pathology