TY - RPRT TI - Principal facts for gravity stations in and near the Madison and Gallatin Divide Roadless Areas, Montana AU - J. H. Hassemer AU - H. E. Kaufmann PY - 1984 DO - 10.3133/ofr84847 UR - https://pubs.usgs.gov/publication/ofr84847 ID - ofr84847 ER -