Cartan, Elie,  1869-1951. <br/><br/>
Leçons sur les invariants intégraux/ 

 - Paris:  Hermann,  1922. 
 - x, 210 p.;  26 cm. 
<br/><br/> At head of title; É. Cartan. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations.<br/>Celestial mechanics.
<br/><br/><label>Dewey Class. No.: </label>515.45 CAR