Gega, Peter C. <br/><br/>
Science in elemantary education 

 - 4th ed. 
 - New York  ; John Wiley & Sons  , 1982 
 - xvii,600p. 
<br/><br/><label>ISBN: </label>0471096784   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>500  / GEG