TY - RPRT TI - Plumbotectonics IIA, Precambrian massive sulfide deposits AU - J. S. Stacey AU - B. R. Doe AU - L. T. Silver AU - R. E. Zartman PY - 1976 DO - 10.3133/ofr76476 UR - https://pubs.usgs.gov/publication/ofr76476 ID - ofr76476 ER -