Lenski, Gerhard Emmanuel,  1924- <br/><br/>
Agrarian societies / 
Gerhard Lenski 
 - New York :  McGraw-Hill,  1970 
 - 52 p. ;  31 cm. 
<br/><br/> A xerox copy from chapter 9 of Human societies : a macro-level introduction to  sociology 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Macrosociology<br/>Social evolution