Gerking <br/><br/>
Biological system/ 

 - London  W.B Salinders company pub.  1988 
 - 480 p.,:  25 cm. 
<br/><br/><label>ISBN: </label>9.7803336606e+012 
<br/><br/><label>Dewey Class. No.: </label>574  / GER1988