Ardrey, Robert. <br/><br/>
The territorial imperative :  a personal inquiry into the animal origins of property and nations / 
Robert Ardrey, drawings by Berdine Ardrey. 
 - London :  Collins,  c1966. 
 - xii, 390 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Territoriality (Zoology)<br/>Human behavior.<br/>Instinct.