Curtis, Helena. <br/><br/>
Biology / 
Helena Curtis. 
 - 2nd ed. 
 - New York :  Worth Publ.,  1975. 
 - xxv, 1065 p. :  ill. ;  27 cm. 
<br/><br/><label>LCCN: </label>93044245 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology.