Environ/mental: essays on the planet as a home / 
edited by Paul Shepard and Daniel McKinley. 
 - Boston,  Houghton-Mifflin  1971. 
 - x, 308 p.  illus.  24 cm. 
<br/><br/>Includes bibliographical references: p. 285-307. 
<br/><br/><label>ISBN: </label>039511246X (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology.