Bennett, Allan Igo. <br/><br/>
Crystals perfect and imperfect /    
by scientists of the Westinghous e Research Laboratories: Allan Bennett [and others] Sharon Banigan, exe cutive editor. 
 - New York :   Walker,   [1965] 
 - 237 p. :    ill. ;    24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crystals.--------
<br/><br/><label>Dewey Class. No.: </label>548 BEN