TY - RPRT TI - New information resources of the U.S. Geological Survey Library System, June 1986 AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1986 DO - 10.3133/ofr86400fg UR - https://pubs.usgs.gov/publication/ofr86400FG ID - ofr86400FG ER -