Organic geochemistry of black shales, marlstones, and oils of middle Pennsylvanian rocks from the northern Denver and southeastern Powder River Basins, Nebraska and Wyoming /
by J.L. Clayton, A. Warden, T.A. Daws, P.G. Lillis, G.E. Michael, and M. Dawson.

APA Citation

Clayton, J., Dawson, M., Michael, G., Lillis, P., Daws, T., Warden, A., Geological Survey (U.S.). (1992). Organic geochemistry of black shales, marlstones, and oils of middle Pennsylvanian rocks from the northern Denver and southeastern Powder River Basins, Nebraska and Wyoming. [Washington, D.C.]: U.S. G.P.O. .

MLA Citation

Geological Survey (U.S.), et al.. Organic Geochemistry of Black Shales, Marlstones, And Oils of Middle Pennsylvanian Rocks From the Northern Denver And Southeastern Powder River Basins, Nebraska And Wyoming. [Washington, D.C.]: U.S. G.P.O. , 1992.