Rockcastle, Verne N. <br/><br/>
Elementary school science 

 - London :  Addison wesley publishing,  1972. 
 - 320p.;  Col.ill.;  20cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primary Education
<br/><br/><label>Dewey Class. No.: </label>372.35  / ELE