@misc{indiciaeaa07ae6e54b4, title = {Geological Survey research 1972, Chapter B}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1972}, doi = {10.3133/pp800b}, url = {https://pubs.usgs.gov/publication/pp800B}, note = {Source identifier: pp800B} }