Read, P.G.. <br/><br/>
Dictionary of Gemmology /  

 - 1st Edn. /  
 - London6bButterworth Scientific and co publishers L :    . 
 - 240p ;  
<br/><br/><label>ISBN: </label>0-408-00571-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Science
<br/><br/><label>Dewey Class. No.: </label>H19K,N82  / M2