"Youngson, Robert M" <br/><br/>
The Guinness Encyclopedia Of Science 

 - London  Enfield : Guinness Publishing Ltd., 1994,Guinness Publishing Ltd  1994 
 - 306 
<br/><br/><label>ISBN: </label>9780851125442 
<br/><br/><label>Dewey Class. No.: </label>500.030  / 251