Willis, F. Roy <br/><br/>
World civilizations / 
F. Roy Willis. 
 - Lexington, Massachusetts :  D.C. Heath and Company,  c1982. 
 - xxxvii, 1485 pages :  Illustrations ;  25 cm. 
<br/><br/><label>ISBN: </label>0669059641 
<br/><br/><label>LCCN: </label>82082246 
<br/><br/><label>LC Class. No.: </label>IN PROCESS