@misc{indiciaebec49f9f5502, title = {Coal resource occurrence and coal development potential maps of the Lost Springs NW Quadrangle, Converse and Niobrara counties, Wyoming}, author = {IntraSearch Inc.}, year = {1979}, doi = {10.3133/ofr79473}, url = {https://pubs.usgs.gov/publication/ofr79473}, note = {Source identifier: ofr79473} }