Nelson, Pearl Astrid <br/><br/>
Elementary school science activities / 
Pearl Astrid Nelson 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1968 
 - ix, 210 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label> USD 7.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.3