@misc{indiciae4a5347deec26, title = {Engineering geology of the Northeast Corridor, Washington D.C., to Boston, Massachusetts: Bedrock geology}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1967}, doi = {10.3133/i514a}, url = {https://pubs.usgs.gov/publication/i514A}, note = {Source identifier: i514A} }