Curtis, Helena <br/><br/>
Invitation to biology 
Helena Curtis ; illustrator, Shirley Baty 
 - 2d ed 
 - New York  Worth Publishers  1977 
 - xxi, 646 p ill. (some col.) 29 cm 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>087901072X 
<br/><br/><label>LCCN: </label>76-50677 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology