TY - RPRT TI - Preliminary report on the distribution of copper and platinum group metals in mafic igneous rocks of the Sierra Madre, Wyoming AU - Robert Stroud Houston AU - J. Eric Schuster AU - Ballard E. Ebbett PY - 1975 DO - 10.3133/ofr7585 UR - https://pubs.usgs.gov/publication/ofr7585 ID - ofr7585 ER -