Welton David A <br/><br/>
Children and their world : Strategies for teaching social studies 

 - Boston, USA  Houghton Mifflin  Company  1996 
 - xxxi,433p. 
<br/><br/><br/>Photocopy 
<br/><br/><label>ISBN: </label>0-395-75589-1 
<br/><br/><label>Source: </label>Reference