Blough, Glenn Orlando. <br/><br/>
Elementary school science and how to teach it 
by Glenn O. Blough and Julius Schwartz. 
 - 7th ed. 
 - New York  Holt, Rinehart and Winston  1984 
 - xv, 620 p.  ill. 
<br/><br/><label>ISBN: </label>0030628660 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>Q181  / .B558 1969 
<br/><br/><label>Dewey Class. No.: </label>372.3/5