John, Fritz <br/><br/>
Plane waves and spherical means  : applied to partial differential equations 

 - New York  ; Springer-Verlag  , 1955 
 - viii,172p. 
<br/><br/><label>ISBN: </label>0387905650  DM.42 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>530  / JOH