Gega Peter, C <br/><br/>
Sciience in elementary education / 
by Peter, C Gega  
 - London :  John wiley & sons,  1966. 
 - 451p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>372.35  / GEG.S