Krug, Mark M. <br/><br/>
History and the social sciences :  new approaches to the teaching of social studies 

 - Massachusetts, Estados Unidos de América :  Blaisdell Publishing Company,   1967 
 - 291p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ESTUDIOS SOCIALES EN EDUCACIÓN PRIMARIA Y SECUNDARIA
<br/><br/><label>Dewey Class. No.: </label>372.83  / K94h