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Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geological Survey Division, the Engineering Experiment Station of the University of Illinois, and the U.S. Bureau of Mines
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Reprint from edition of 1915.At head of title: State of Illinois. Department of registration and edu...
Cover title."Illinois coal mining investigations coo??perative agreement. (This report was prepared ...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
At head of title: State of Illinois. Department of registration and education. Division of the State...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering,...
At head of title: State of Illinois. Department of registration and education. Division of the State...
Illinois coal mining investigations, cooperative agreement. (This report was prepared under a cooper...
Prepared under a cooperative agreement between the Illinois State geological survey division, the En...
At head of title: State of Illinois. Department of registration and education. Division of the state...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
Reprinted extract from Bulletin no. 27."Illinois mining investigations, prepared under a cooperative...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Reprint from edition of 1915.At head of title: State of Illinois. Department of registration and edu...
Cover title."Illinois coal mining investigations coo??perative agreement. (This report was prepared ...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
At head of title: State of Illinois. Department of registration and education. Division of the State...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering,...
At head of title: State of Illinois. Department of registration and education. Division of the State...
Illinois coal mining investigations, cooperative agreement. (This report was prepared under a cooper...
Prepared under a cooperative agreement between the Illinois State geological survey division, the En...
At head of title: State of Illinois. Department of registration and education. Division of the state...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
Reprinted extract from Bulletin no. 27."Illinois mining investigations, prepared under a cooperative...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Reprint from edition of 1915.At head of title: State of Illinois. Department of registration and edu...
Cover title."Illinois coal mining investigations coo??perative agreement. (This report was prepared ...
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