Showalter, R. E. <br/><br/>
Hilbert space methods for partial differential equations   

 - London  Pitman  1977 
 - xii, 196p. Index 
 - Monograph and studies in Mathematics, 1 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>515.35  / Sh559.HS