Edwards, C.A. <br/><br/>
Persistant pesticides in the environment 
<label>/ by </label> Edwards, C.A. 
 - 2nd ed. 
 - Cleveland  CRC Press  1973(1976) 
 - [vi],170p.  ill.  26cm. 
<br/><br/>PR 
<br/><br/><label>Dewey Class. No.: </label>632.95  / E