Add to ORKGPrepared 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 ...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
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...
At head of title: State of Illinois. Department of registration and education. Division of the State...
At head of title: State of Illinois. Department of registration and education. Division of the state...
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 ...
Reprint from edition of 1915.At head of title: State of Illinois. Department of registration and edu...
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...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Field work by G.H. Cady, F.H. Kay, K.D. White, and others.Illinois mining investigations prepared un...
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...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
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...
At head of title: State of Illinois. Department of registration and education. Division of the State...
At head of title: State of Illinois. Department of registration and education. Division of the state...
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 ...
Reprint from edition of 1915.At head of title: State of Illinois. Department of registration and edu...
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...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Field work by G.H. Cady, F.H. Kay, K.D. White, and others.Illinois mining investigations prepared un...
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...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...
Prepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering ...