Friedman, J <br/><br/>
The evolution of social systems 

 - Gloucester:  Duckworth,  1977 
 - xiv,562p.:  ill.;  25cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0 7156 0934 3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evolution<br/>Social evolution<br/>Behaviour<br/>Social biology
<br/><br/><label>LC Class. No.: </label>QH371.E96 1977