Cassels, J.W.S <br/><br/>
Rational Quadratic Forms 
/ by J.W.S. Cassels 
 - New York:  Dover publications  2008 
 - xvi, 413p. 
<br/><br/><label>ISBN: </label>0486466701 
<br/><br/><label>Dewey Class. No.: </label>512.74  / CAS/R