TY - RPRT TI - Spectrographic and chemical analyses, and sample location maps of stream sediments and rocks from the Choteau 1° x 2° quadrangle, Montana AU - D. J. Grimes AU - R. W. Leinz AU - R.T. Hopkins PY - 1980 DO - 10.3133/ofr801258 UR - https://pubs.usgs.gov/publication/ofr801258 ID - ofr801258 ER -