GOURSAT Edouard <br/><br/>
Variation of solutions partial differential equations of the second order 

 - New York  Dover publications          1964 
 - x,329p.  cm. 
 - A course in mathematical analysis;3 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B334, K4/SC