Books by Philip J. DeMaris
Total count: 2
Geologic investigation of roof and floor stratalongwall demonstration, Old Ben Mine no. 24 : prediction of coal balls in the Herrin coal : final technical report, part 2Illinois Dept. of Energy and Natural Resources, State Geological Survey Division1983-01-01
Identification of mine subsidence on aerial photographs in central IllinoisIllinois State Geological Survey1983-01-01