@misc{indiciae3fbc776b6edf, title = {Conversion factors: SI metric and U.S. customary units}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1977}, doi = {10.3133/70039189}, url = {https://pubs.usgs.gov/publication/70039189}, note = {Source identifier: 70039189} }