@misc{indiciae9d0e985bc316, title = {Shaling studies in the western part of NPR-4 and adjoining areas, 1952}, author = {E.G. Sable}, year = {1954}, doi = {10.3133/ofr54261}, url = {https://pubs.usgs.gov/publication/ofr54261}, note = {Source identifier: ofr54261} }