TY - RPRT TI - Precambrian basement structure map of the continental United States - An interpretation of geologic and aeromagnetic data AU - Paul K. Sims AU - Richard W. Saltus AU - Eric D. Anderson PY - 2008 DO - 10.3133/sim3012 UR - https://pubs.usgs.gov/publication/sim3012 ID - sim3012 ER -