Hann, Judith          frey50        <br/><br/>
How science works 
Judith Hann 
 - New York  Reader's Digest  1991 
 - 192 p. 
 - The Family science library . <br/><br/><label>ISBN: </label>0895773821 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science experiments
<br/><br/><label>Dewey Class. No.: </label>j507.8 Han   25