Bolza, O. (Oskar),  1857-1942. <br/><br/>
Lectures on the calculus of variations 

 - 3d ed. 
 - New York :  Chelsea Publishing Company,  1973. 
 - ix, 269 p. :  illus. ; 22 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>082841145X 
<br/><br/><label>LCCN: </label>73-016324 //r85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.