Moiseiwitsch, B. L. <br/><br/>
Variational Principles / 
B. L. Moiseiwitsch. 
 - New york :  John wiley & son,  c 1966. 
 - 310 p. ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/>42  42 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mathematical physics.
<br/><br/><label>Dewey Class. No.: </label>515.64 / M728v