@misc{indiciaedbb2c9a39600, title = {New information resources of the U.S. Geological Survey Library System, Number 58, February 1991}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1991}, doi = {10.3133/ofr91400b}, url = {https://pubs.usgs.gov/publication/ofr91400B}, note = {Source identifier: ofr91400B} }