Estvan Frank J <br/><br/>
Social studies in a changing world    Curriculum an    
Estvan Frank J 
 - New York  Harcourt Brace and World U. S. A.     1968 
 - xii, 532p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Education<br/>Teaching Techniques
<br/><br/><label>Dewey Class. No.: </label>T:3(Sigma), K8