TY - RPRT TI - Rejuvenating Pre-GPS era geophysical surveys using The National Map AU - Michael P. Finn AU - Thomas G. Shoberg AU - Paul Stoddard PY - 2013 DO - 10.1061/(asce)su.1943-5428.0000068 UR - https://pubs.usgs.gov/publication/70046846 ID - 70046846 ER -