Verma, O.P.S., <br/><br/>
Cell  Biology, Genetics, Evolutiopn & Ecology 

 - 12th /   1991. 
 - Delhi:  S Chand & Company Ltd,  1991. 
 - 746p: 
<br/><br/><label>Subjects--Personal Names: </label><br/>Zoology, Cytology. 
<br/><br/><label>Dewey Class. No.: </label>574.87