TY - RPRT TI - Density and porosity of Upper Cretaceous through Permian formations from borehole gravity measurements, Big Polecat oil and gas field, Park County, Wyoming AU - L. A. Beyer AU - F. G. Clutsom PY - 1980 DO - 10.3133/oc103 UR - https://pubs.usgs.gov/publication/oc103 ID - oc103 ER -