@misc{indiciae689ea6adc688, title = {Progress report: Apollo 16 sample documentation}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1972}, doi = {10.3133/ofr72397}, url = {https://pubs.usgs.gov/publication/ofr72397}, note = {Source identifier: ofr72397} }