TY  - BOOK
AU  - Mason,Ralph S.
AU  - Erwin,Margaret Isabelle
TI  - Coal resources of Oregon,
AV  - QE75 .C5 no. 362
PY  - 1955///
CY  - Washington
KW  - Coal mines and mining
KW  - Oregon
N1  - Bibliography: p. 6-7
ER  -