Emmel, Thomas C. <br/><br/>
An introduction to ecology and population biology / 
Thomas C. Emmel. 
 - New York :  Norton,  c1973. 
 - x, 196 p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0393093719 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Population biology.<br/>Nature--Effect of human beings on.