Greenspan, Donald. <br/><br/>
Introduction to partial differential equations / 
Donald Greenspan 
 - New York :  McGraw-Hill,  c1961. 
 - viii, 195 p. :  illus. ;  23 cm. 
<br/><br/>Includes bibliography and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Partial.
<br/><br/><label>Dewey Class. No.: </label>517.383  / GRI 1961