TY - JOUR TI - Outline of the precambrian geochronology of South America PY - 1968 AU - Cordani, Umberto G. AU - Melcher, Geraldo Conrado AU - Almeida, Fernando Flávio Marques de T2 - Canadian Journal of Earth Sciences SN - 0008-4077 DO - 10.1139/e68-058 UR - https://doi.org/10.1139/e68-058 VL - 5 SP - 629-632 ER -