Gram, Ernst <br/><br/>
Recognition of diseases and pests of farm crops/ 
Ernst Gram, Prosper Bovien and Chr. Stapel 
 - Cambridge:  Danis Agricultural Information and Advisory Aids Service,  1958 
 - 128 p.:  col. plates;  22 cm. 
<br/><br/> Text in English Spanish and French 
<br/><br/><label>ISBN: </label> £ 35 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant diseases<br/>Crop lossess<br/>Vegetables--Diseases and pests<br/>Grain--Diseases and pests<br/>Field crops--diseases and pest resistance--Europe
<br/><br/><label>Dewey Class. No.: </label>632