Leonard, Kurt J. <br/><br/>
Plant disease epidemiology vol.2  genetics, resistance and management 
by Kurt J. Leonard, William E. Fry. 
 - New York  McGraw-Hill  1989 
 - xii, 377p 
<br/><br/><label>ISBN: </label>0070372357 
<br/><br/><label>Dewey Class. No.: </label>581.2  / N891