Van den Bosch, Robert; Messenger, P S <br/><br/>
Biological control 

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 - Intertext Books, Beds  1973 
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological control of pests--agriculture
<br/><br/><label>Dewey Class. No.: </label>632.96  VAN-B