Gäumann, Ernst. <br/><br/>
Principles of plant infection :  a text-book of general plant pathology for biologists, agriculturists, foresters and plant breeders / 
Ernst Gäumann ;  Authorized English edited by William B. Brierley. 
 - London :   Crosby Lockwood,  c 1950. 
 - xvi, 543 p. :  ill. ;  25 cm. 
<br/><br/> includes index. 
<br/><br/>342  342 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant injuries, diseases, pests.
<br/><br/><label>Dewey Class. No.: </label>632 / G23p