Bonn, George S. <br/><br/>
Information resources in the envirormental sciences 

 - Champaign, Ill. :  University of Illinois,  1973 
 - 238 p.  : ilus. 
 - Allerton Park Institute  ; 18 .
 - Allerton Park Institute  ; 18 .
<br/><br/><label>LCCN: </label>20919 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medio ambiente--Servicios de información.
<br/><br/><label>Dewey Class. No.: </label>333.72  / B6