Present status of correlation of Illinois coals,
Culver, Harold Eugene, 1883-
Present status of correlation of Illinois coals, by Harold E. Culver. - Urbana, Ill. [Springfield, Jeffersons Printing & Stationery Co.] 1927. - 13 p.
At head of title: State of Illinois. Department of registration and education. Division of the State Geological Survey.
gs 28000005
Geology, Stratigraphic--Carboniferous.
Coal--Illinois.
QE673 / .C8
Present status of correlation of Illinois coals, by Harold E. Culver. - Urbana, Ill. [Springfield, Jeffersons Printing & Stationery Co.] 1927. - 13 p.
At head of title: State of Illinois. Department of registration and education. Division of the State Geological Survey.
gs 28000005
Geology, Stratigraphic--Carboniferous.
Coal--Illinois.
QE673 / .C8