Choquard, Philippe <br/><br/>
The anharmonic crystal / 
Philippe Choquard 
 - New York :  W. A. Benjamin,  1967 
 - xii, 340 p. :  ill. ;  24 cm. 
 - Frontiers in physics .
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 334-335 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crystallography, Mathematical<br/>Perturbation (Mathematics)<br/>Quantum theory
<br/><br/><label>Dewey Class. No.: </label>548.7