TY  - BOOK
AU  - Zubkov, V.
TI  - General petrography: a short course
U1  - 552. 
PY  - 1967///
CY  - Moscow
PB  - Mir
KW  - Magnetic rocks
KW  - Petrography
KW  - Sedimentory rocks
N1  - Includes index
ER  -