Brillouin, Leon <br/><br/>
Wave propagation and group velocity. 

 - New York and London :  Academic press,  1960. 
 - 154 p. 
 - Pure and applied physics, v.<8> .
 - Pure and applied physics, v.<8> .
<br/><br/><label>Subjects--Topical Terms: </label><br/>ACUSTICA