Bosch , Robert van den <br/><br/>
Biological control / 
by Robert van den Bosch , P. S. Messenger 
 - Aylesbury  :  Intertext ,  1973 
 - xii, 180 p. :  ill. ;  23 cm . 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>0700202307 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insect control--Biological control