@misc{indiciae8463eac18792, title = {New information resources of the U.S. Geological Survey Library System, May 1990}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1990}, doi = {10.3133/ofr90400e}, url = {https://pubs.usgs.gov/publication/ofr90400E}, note = {Source identifier: ofr90400E} }