Petrovsky, I. G. <br/><br/>
Lectures on Partial Differential Equations 

 - New York :  Dover Publications,  1991 
 - x, 245p.;  21cm 
<br/><br/><label>ISBN: </label>0486669025 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential Equations
<br/><br/><label>Dewey Class. No.: </label>515.353  / PET