1.
Illinois Mineral Industry in 1946; Report of Investigations No. 127
by Voskuil, Walter H. (Walter ...
ISBN: 9781015309456
List Price: $14.95
2.
Competitive Position of Illinois Coal in the Illinois Coal Market Area; Illinois State Geolo...
by Voskuil, Walter H. (Walter ...
ISBN: 9781014637215
List Price: $14.95