Distribution maps of plant diseases 

 - [ ? ] :    Commonwealth Agricultural Bureaux,    1971- 
 - v. :    ill. ;    15 cm. 
<br/><br/>Commonwealth Mycological Institute 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant diseases -- Maps
<br/><br/><label>Dewey Class. No.: </label>630