TY  - BOOK
AU  - Betekhtin,A.
TI  - A course of mineralogy
U1  - 549 BET  
PY  - 0000///[?].
CY  - Moscow : 
PB  - Peace Publishers, 
KW  - Mineralogy
KW  - Minerals
N1  - Contents: Pt.1.Introduction- Pt.2.Classification of minerals- Pt.3.Minerals of the earth's crust
ER  -