@misc{indiciae010e9c631e9d, title = {Joints in clay and their relation to the slope failure at Greenbelt, Maryland, December 28, 1962}, author = {Charles F. Withington}, year = {1964}, doi = {10.3133/ofr64165}, url = {https://pubs.usgs.gov/publication/ofr64165}, note = {Source identifier: ofr64165} }