Lemons, D.S <br/><br/>
Perfect form  variational principles, methods & applications in elementary physics 
D.S. Lemons 
 - Princeton  Princeton University Press  1997 
 - xi  117 
<br/><br/> with ASV 
<br/><br/><label>ISBN: </label>0691026637 
<br/><br/><label>Dewey Class. No.: </label>14.07  / LEMO