@misc{indiciaed38c3ff70a10, title = {Guidelines for the use of NAWDEX data systems}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1978}, doi = {10.3133/70039585}, url = {https://pubs.usgs.gov/publication/70039585}, note = {Source identifier: 70039585} }