Gram, Ernst. <br/><br/>
Recognition and control of pests and diseases of farm crops/ 
Ernst Gram, Prosper Bovien and Chr. Stapel. 
 - Revised and enlarged 2nd ed. 
 - Poole:  Blandford Press,  1980. 
 - vi,167 p.:  ill. ;  25 cm. 
<br/><br/> Index. 
<br/><br/><label>ISBN: </label>0713709952 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant diseases.<br/>Agricultural pests.<br/>Pest control.