Oliver, Carl. <br/><br/>
Our changing world :  man, the world, and the social studies / 
Carl Oliver and Robert Sobel. 
 - Palo Alto, Calif :    Laidlaw Bros.,  ©1969. 
 - 728 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social change.<br/>Social sciences--Study and teaching.<br/>Geography.
<br/><br/><label>Dewey Class. No.: </label>910  / OLO 1969