Leray, Jean,  1906- <br/><br/>
Hyperbolic differential equations/ 
Jean Leray. 
 - [Princeton, NJ]:  Institute for Advanced Study,  1953?]. 
 - 238 p.:  illus.,  27 cm. 
<br/><br/>Bibliography: leaves 4-6. 
<br/><br/><label>LCCN: </label>a  55003052 //r78 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Hyperbolic.
<br/><br/><label>Dewey Class. No.: </label>515.35  / L614h