Brillouin, Léon,  1889- <br/><br/>
Wave propagation and group velocity/ 
Léon Brillouin. 
 - New York:  Academic Press,  1960. 
 - 154 p.:  illus.,  24 cm. 
 - Pure and applied physics,  v. 8. .
<br/><br/>Includes bibliography. 
<br/><br/><label>LCCN: </label>59013829 /L/r84 
<br/><br/><label>Nat. Bib. No.: </label>GB60-4155 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wave mechanics<br/>Wave-motion, Theory of
<br/><br/><label>Dewey Class. No.: </label>530.12  / B857w