TY - RPRT TI - Use of azimuthal square-array direct-current resistivity to locate a geologic structure at Fort Detrick, Maryland AU - D. H. Tepper AU - D. J. Phelan PY - 2001 DO - 10.3133/ofr01285 UR - https://pubs.usgs.gov/publication/ofr01285 ID - ofr01285 ER -