Betekhtin/A  <br/><br/>
A course of minerology 

 -  Peace publishers 
 - 642 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Minerology
<br/><br/><label>Dewey Class. No.: </label>549