Verma, P.S. . <br/><br/>
Textbook of Animal Physiology and Ecology /  Textual Documents 
P.S. Verma, B.S. Tyagi, V.K. Agarwal. 
 - 4th ed. / 
 - New Delhi :  S. Chand & Company ,  1989. 
 - 246, xxip. :  ill. ;  20cm . 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>81-219-0352-1 
<br/><br/><label>Subjects--Index Terms: </label>Zoology Animal physiology Ecology PG-Zoology 
<br/><br/><label>Dewey Class. No.: </label>590.1