@misc{indiciae2aad27d7b222, title = {Investigation of in situ physical properties of surface and subsurface site materials by engineering geophysical techniques-Annual Report, fiscal year 1965}, year = {1967}, doi = {10.3133/ofr67271}, url = {https://pubs.usgs.gov/publication/ofr67271}, note = {Source identifier: ofr67271} }