Greenspan, Donald <br/><br/>
Introduction to partial differential equations 

 - New York  McGraw-Hill Book Comp  1961 
 - viii,195p.  23cm. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Differential<br/>Equations
<br/><br/><label>Dewey Class. No.: </label>515.353  / G78I