Kimball, W. S. <br/><br/>
Calculus of variations by parallel displacement / 
W. S. Kimball 
 - London :  Butterworths Scientific Pubs.,  1952 
 - viii, 543 p. :  ill. ;  26 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 50.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations