TY - RPRT TI - Preliminary data report conducted for the Colorado State Geological Survey on the Superconducting, Supercollider study AU - D. S. Collins AU - T. C. Nichols PY - 1987 DO - 10.3133/ofr8755 UR - https://pubs.usgs.gov/publication/ofr8755 ID - ofr8755 ER -