@misc{indiciae38e4eecfe4c9, title = {Geological Survey research 1970, Chapter C}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1970}, doi = {10.3133/pp700c}, url = {https://pubs.usgs.gov/publication/pp700C}, note = {Source identifier: pp700C} }