Wragg,  E, C . <br/><br/>
Explaning in the secondary school 

 - London :  Routledge,  1993. 
 - viii,72p.;  25cm 
<br/><br/><label>ISBN: </label>0415249562 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Secondary Education
<br/><br/><label>Dewey Class. No.: </label>373.1102  / WRA