Enger, Eldon D. <br/><br/>
Field and laboratory activities in environmental science / 
Eldon D. Enger, Bradley F. Smith ; with contributions by Paul Nowak 
 - 5th ed. 
 - Dubuque, Iowa :  Wm. C. Brown Publishers,  1995 
 - 212 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0697159094  RM53.15 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Field work<br/>Ecology--Laboratory manuals<br/>Environmental sciences