Lagu, R. G. <br/><br/>
How and why in science : senior series book 2 / 
Lagu, R. G. 
 - vi, 39 p. : ill. ; 24 cm. 
<br/><br/><label>ISBN: </label>0195613376 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>500