Beyers, R.J. <br/><br/>
Ecological microcosms 
Robert J. Beyers and, Howard T.; Odum. 
 - New York  SpringerVerlag  1993 
 - xv, 557p., illus.; 24cm. 
<br/><br/><label>ISBN: </label>0-387-97980-8. 
<br/><br/><label>Dewey Class. No.: </label>574.5  / B51E