Armstrong, David G. <br/><br/>
Social studies in secondary education 
David G. Armstrong 
 - New York  Macmillan  1980 
 - xviii, 429 p. ; 24 cm. 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>0023039809 
<br/><br/><label>LCCN: </label>78-21035 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Study and teaching (Secondary)--United States