Friedrichs, K.O <br/><br/>
Pseudo-differential operators  introduction:lectures given in 1967-68 at the courant institute 
K.O. Friedrichs 
 - New York  Courant Inst. of Math'l. Sciences  1970 
 - vi  279 
<br/><br/><label>Dewey Class. No.: </label>10.07  / FRIE