TY  - BOOK
AU  - Mapel,W.J.
TI  - A thick coal bed near Lake De Smet, Johnson County, Wyoming,
T2  - Geological Survey circular
AV  - QE75 .C5 no. 228
U1  - 553.2 
PY  - 1953///
CY  - Washington
KW  - Coal
KW  - Wyoming
KW  - Johnson County
KW  - Geology
KW  - Borings
N1  - Part of illustrative matter is folded in pocket; "Correction" slip inserted, p. iii; Bibliographical footnotes
ER  -