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- 73620933 contributor B2370295.
- 73620933 contributor B2370296.
- 73620933 created "1972.".
- 73620933 date "1972".
- 73620933 date "1972.".
- 73620933 dateCopyrighted "1972.".
- 73620933 description "Bibliography: p. 24-25.".
- 73620933 extent "25 p.".
- 73620933 isPartOf "Circular (Illinois State Geological Survey) ; 473.".
- 73620933 isPartOf "[Illinois. State Geological Survey] Circular 473".
- 73620933 issued "1972".
- 73620933 issued "1972.".
- 73620933 language "eng".
- 73620933 publisher "Urbana, Illinois State Geological Survey,".
- 73620933 spatial "Illinois.".
- 73620933 subject "557.73/08 s 551.7/52/0977359".
- 73620933 subject "Coal Geology Illinois.".
- 73620933 subject "Geology Illinois.".
- 73620933 subject "Geology, Stratigraphic Pennsylvanian.".
- 73620933 subject "QE105 .A45 no. 473 QE673".
- 73620933 title "Subsurface geology and coal resources of the Pennsylvanian system in De Witt, McLean, and Piatt Counties, Illinois [by] Kenneth E. Clegg.".
- 73620933 type "text".