Hart, Robert A. de J. <br/><br/>
Ecosociety :  a historical study of ecological man / 
Robert A. de J. Hart. 
 - 1st ed. 
 - Dehra Dun :  Natraj,  1984. 
 - xii, 196 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Collective settlements--History.<br/>Human ecology--History.
<br/><br/><label>Dewey Class. No.: </label>333.7  / HAE 1984