Thier, Herbert D. <br/><br/>
Teaching elementary school science:  a laboratory approach / 
by Herbert D. Thier 
 - New Delhi :  Sterling Publishers,  1970 
 - vii, 273 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.3