TY - RPRT TI - Principal facts for gravity stations in parts of Grand, Clear Creek, and Summit counties, Colorado AU - G. A. Abrams AU - C. Moss AU - R.A. Martin AU - M. Brickey PY - 1982 DO - 10.3133/ofr82950 UR - https://pubs.usgs.gov/publication/ofr82950 ID - ofr82950 ER -