Humans as components of ecosystems :  the ecology of subtle human effects and populated areas / 
Mark J. McDonnell, Steward T. A. Pickett, editors. 
 - New York :  Springer-Verlag,  1993. 
 - 364 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0387940626 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology--Congresses.