Ettinger, Stephen J. <br/><br/>
Textbook of veterinary internal medicine:   diseases of the dog and cat. 

 - 4a edición 
 - Philadelphia   W. B. Saunders  1997 
<br/><br/><label>ISBN: </label>072166797X 
<br/><br/><label>Dewey Class. No.: </label>636.70896 E853t