Allen, Robert D. <br/><br/>
Biology :  a critical thinking approach / 
Robert D. Allen. 
 - xvii, 298 p. :  illustration ;  27 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0-697-14749-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology.