Walker, John Charles <br/><br/>
Plant Pathology 

 - Unknown  Unknown  1978 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant diseases--Botany--Plant Pathology
<br/><br/><label>Dewey Class. No.: </label>571.92  / WAL-P