@misc{indiciae1db420f782a6, title = {Investigation of in situ physical properties of surface and subsurface site materials by engineering geophysical techniques-Quarterly Report, October 1, 1965-December 31, 1965}, year = {1967}, doi = {10.3133/ofr67273}, url = {https://pubs.usgs.gov/publication/ofr67273}, note = {Source identifier: ofr67273} }