TY  - BOOK
AU  - Semkiwa,Pascal Z.
TI  - Depositional environment and coal petrography of permian coal deposition in karoo  basins of basins of Sw - Tanzania
AV  - EAF TN810.T34S45 
PY  - 1992///
CY  - Cologne
PB  -  : Geological Institute
KW  - Coal deposits
KW  - Petrography
KW  - Tanzania
N1  - Includes index
ER  -