@inproceedings{inproceedingsd0d0257d,
title   = {Additional geochronological data of precambrian tin province of Rondonia},
author = {Bettencourt, Jorge Silva and Bon, E. H. and Verdomen, E. A. T.},
year = {1987},
publisher = {Iugs-Unesco/Dnpm},
booktitle   = {Precambrian Evolution of the Amazonian Region, Project Igcp-204: Final Meeting}
}