Environmental protection and biological forms of control of pest organisms 
B. Lundholm and M. Stackerud (editors) 
 - Stockholm  Ecological Bulletins Swedish Natural Science Research  1979 
 - 171 p. ; 24 cm. 
 - Ecological bulletins  no. 31 .
<br/><br/><label>ISBN: </label>9154602807 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection<br/>Pests--Biological control