GELBART, WILLIAM M. <br/><br/>
CALCULUS OF VARIATIONS 

 - S.E. 
 - Estados Unidos  PRENTICE-HALL  1963 S.L. 
 - 232 
<br/><br/><label>LCCN: </label>7121 
<br/><br/><label>Dewey Class. No.: </label>515.64