Hoffman, Jane. <br/><br/>
Backyard scientist.  Series two / 
by Jane Hoffman ; illustrated by Lanny Ostroff. 
 - Irvine, CA :  Backyard Scientist/J. Hoffman,  c1989. 
 - 52 p. :  ill ;  22 cm. 
<br/><br/> "Ages 9 years to 14 years"--Cover. 
<br/><br/><label>ISBN: </label>0961866322 
<br/><br/><label>LCCN: </label>92119236 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Experiments--Juvenile literature.<br/>Experiments.<br/>Science--Experiments.
<br/><br/><label>LC Class. No.: </label>Q164  / .H644 1989 
<br/><br/><label>Dewey Class. No.: </label>507.8