Das, S . <br/><br/>
Biology /  Textual Documents 
S.Das. 
 - 1st ed. / 
 - New Delhi :  A.J. Reprints Agency ,  1930. 
 - 42p. :  ill ;  22cm . 
<br/><br/><label>Subjects--Index Terms: </label>Biology 
<br/><br/><label>Dewey Class. No.: </label>300  / DAS