Biology : Textbook for class XI  Textual Documents 
By National Council of Educational Research and Training (NCERT) 
 - First--2006 Later on Reprinted 2017. 
 - New Delhi  NCERT 
 - 346pg:  ill. picture;  33cm. 
<br/><br/><label>ISBN: </label>81-7450-496-6 
<br/><br/><label>Subjects--Index Terms: </label>Biology Textbook--Biology G-Biology 
<br/><br/><label>Dewey Class. No.: </label>570