Petrovskii, I.G. <br/><br/>
Partial differential equations 

 - London  Iliffe Books  1967 
 - 410 p. 
<br/><br/><label>ISBN: </label>_ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Partial differential equations
<br/><br/><label>Dewey Class. No.: </label>515.353  / PET