Welch, Stephen M. <br/><br/>
The design of biological monitoring systems for pest management 

 - New York :  Wiley,  1979 
 - 76 p. 
 - A Halsted press book .
 - A Halsted press book .
<br/><br/><label>LCCN: </label>53413 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control biológico de plagas.