TY  - BOOK
AU  - Berryhill,Louise R.
AU  - Averitt,Paul
TI  - Coking-coal deposits of the western United States,
AV  - QE75 .C5 no. 90
PY  - 1951///
CY  - [Washington]
KW  - Coking coal
KW  - United States
N1  - Cover title; "References": p. 19-20
ER  -