TY - RPRT TI - Geochemistry of Precambrian mafic dikes, central Bighorn Mountains, Wyoming, U.S.A. AU - T.J. Armbrustmacher PY - 1977 DO - 10.1016/0301-9268(77)90010-9 UR - https://pubs.usgs.gov/publication/70010181 ID - 70010181 ER -