Parker, Bertha Morris <br/><br/>
Plant factories / 
by Bertha Morris Parker and Orlin D. Frank 
 - Exeter :  Wheaton,  1944 
 - 35 p. :  ill. (part col.) ;  22 cm. 
 - The Basic science education series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Juvenile literature<br/>Plant physiology--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>580