Davidson Ralph Howard <br/><br/>
Insects pests of farm, garden and orchard 
Ralph Howard Davidson  
 - New York:  John Wiley,  1966. 
 - 675p 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insects,Injurios,and benificial
<br/><br/><label>Dewey Class. No.: </label>632  / DAI