Sikjer Soren Ed. <br/><br/>
On the teaching of physics in schools 

 -  1971 
<br/><br/><label>ISBN: </label>8700947814 
<br/><br/><label>Standard No.: </label>103545 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>C:(T:3).56, L1