Welton, David A. <br/><br/>
Children and their world :  strategies for teaching social studies / 
David A. Welton, John T. Mallan 
 - 2nd ed. 
 - Boston :  Houghton Mifflin,  1981 
 - 492 p. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0395307694 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Study and teaching (Elementary)