TY  - BOOK
T1  - Recommended procedures and methodology of coal description /
DA  - 1983.
CY  - [Washington] :
AU  - Chao, E. C. T.
CN  - QE75 .C5 no.894
CN  - QE75
CN  - TP325
PB  - U.S. Dept. of the Interior, Geological Survey,
PP  - [Washington] :
PY  - 1983.
N1  - "This document is the result of a workshop on coal description held for the Branch of Coal Resources of the U.S. Geological Survey in March 1982"--Abstract.
ID  - 68156
KW  - Coal
TI  - Recommended procedures and methodology of coal description /
ER  -