Vankudri, N. B.; Chitley, P. K.; Kumar, V. M. & Sharma, C. N. <br/><br/>
Fundamentals of biology std. XI 

 - 4th ed 
 - Sheth publishers pvt ltd, Mumbai  1989 
 - 277p 
<br/><br/><label>Dewey Class. No.: </label>574 Van