TY - RPRT TI - Gravity survey data for the International Falls and Roseau CUSMAP projects, Minnesota, USA, and Ontario, Canada AU - Robert Horton AU - R.P. Kucks PY - 1988 DO - 10.3133/ofr88513 UR - https://pubs.usgs.gov/publication/ofr88513 ID - ofr88513 ER -