NCERT <br/><br/>
Biology: a text book for secondary schools, section 1 some basic facts about life ed by Maheshwari and Manoharlal 

 - New Delhi  NCERT  1967 
 - xvi,96,iv 
<br/><br/><br/>English 
<br/><br/><label>Dewey Class. No.: </label>574  / NCERT