Commonwealth institute of biological control 

 - England:   Commonwealth Agriculture Bureaux,   1967 
 - 138p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology 
<br/><br/><label>Subjects--Index Terms: </label>Agriculture  
<br/><br/><label>Universal Decimal Class. No.: </label>595.7(047.3)  / K7