Coalbed Methane Activity in the Western Powder River Basin, Campbell, Converse, Johnson, Natrona, and Sheridan Counties, Wyoming (2001)

De Bruin, R.H., Lyman, R.M., Hallberg, L.L., and Harrison, M.M., 2001, Coalbed methane activity in the western Powder River Basin, Campbell, Converse, Johnson, Natrona, and Sheridan counties, Wyoming: Wyoming State Geological Survey Coalbed Methane Map 01-4, scale 1:126,720.