Biology  textbook for class XI 
D. P. Chakraborti ..[et.al.]. 
 - New Delhi  National Council of Educational Research and Training (NCERT)  2002 
 - xviii, 361p.: col. ill.; 26cm. 
<br/><br/><label>ISBN: </label>8174500642 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life Science.
<br/><br/><label>Dewey Class. No.: </label>574  / B54B