Smith, Ella Thea. <br/><br/>
Exploring biology / 
Ella Thea Smith ; drawings by Marion A. Cox. 
 - New York :  Harcourt, Brace,   1954. 
 - 595 pages :  illustrations ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>570  / SME 1954