Charophyta / 
B. P. Pal...[et.al]. 
 - New Delhi :  ICAR,  1962. 
 - x, 130 p. :  ill. ;  24 cm. 
 - ICAR Monographs on algae. .
<br/><br/> Include index. 
<br/><br/><label>Dewey Class. No.: </label>589.3(54)