Sears, Paul B.  <br/><br/>
Where there is life :  an introduction to ecology 
/ by Paul B. Sears. 
 - New York :  Dell Publishing co.,  1970. 
 - 205 p. ;  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Conservation of natural resources.
<br/><br/><label>Dewey Class. No.: </label>574.5 SEA  / 1201