Coal near the Black hills, Wyoming--South Dakota
Stone, Ralph W. (Ralph Walter)
1876-1964
creator
text
xx
Govt. Print. Off.
1912
monographic
eng
66 p.
Coal mines and mining
Wyoming
Coal mines and mining
South Dakota
QE75 .B9 no. 499
gs 12000257
DLC
720327
20260227111312.0
gs 12000257