Estvan, Frank J <br/><br/>
Social studies in a changing world  curriculum and instruction 
by Frank J. Estvan 
 - New York  Harcourt Brace Jovanovich  1968 
 - xii, 532 p. : ill. ; 23 cm. 
<br/><br/>p. 514-516 
<br/><br/><label>LCCN: </label>68-021726 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Study and teaching