Walton James. <br/><br/>
Physical Gemmology.(1952). 

 - 1st Ed. 
 -  Singhul pub. India.  1960 
 - 304p.  23 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>CIVI
<br/><br/><label>Index Terms--Genre/Form: </label><br/>H-02
<br/><br/><label>Dewey Class. No.: </label>23G-151  / WAL