Duiker, William J.,  1932- <br/><br/>
The essential world history / 
William J. Duiker, Jackson J. Spielvogel. 
 - 6th ed. 
 - Boston, MA :  Wadsworth,  2011. 
 - xxxv, 844 p. , :  maps, ill. (some col.) ;  28 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780495902270 (main v.; chapters 1-30)  RM443.69 9780495902911 (v. i, to 1800: chapters 1-18) 9780495902928 (v. ii, since 1500: chapters 14-30) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World history