DRUGGE, N. L. et al. <br/><br/>
Developing Science Concepts in the Laboratory / 

 - Canada,  Prentice- Hall of Canada, Ltd.  1968, 
 - viii,280p.ill.; 25.8 cm. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Dewey Class. No.: </label>500  DRU