Zafforoni, Joseph <br/><br/>
New developments in elementary school science. 
Report of a study by Joseph Zafforoni, with editorial assistance by Edith Selberg. 
 - Washington  National Science Teachers Association  [c1963] 
 - 52 p.  diagrs.  23 cm. 
<br/><br/> "Based on a study conducted by a comittee of the National Science Teachers Association." 
<br/><br/><label>LCCN: </label>63023589  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>LB1585  / .Z24 
<br/><br/><label>Dewey Class. No.: </label>372.35