Verma, Ajit Ram. <br/><br/>
Polymorphism and polytypism in crystals /  

 - 1st ed /  
 - New York :   John Wiley & Sons, Inc. ,   1980 
 - xix, 341p ;  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>C21  / K6