Andersen Hans 0 <br/><br/>
Towards more effective science instrucion in secondary education 
Andersen Hans 0; Koutnik Paul G 
 - New York  Macmillan         1972 
 - 241p  cm. 
<br/><br/><label>Standard No.: </label>47746 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>T2, L2