TY - RPRT TI - Preliminary results from microanalyses of organic matter in the lower Proterozoic uranium ores at Oklo in Gabon AU - J.S. Leventhal AU - Bartholomew Nagy AU - F. Gauthier-Lafaye PY - 1989 DO - 10.3133/ofr89668 UR - https://pubs.usgs.gov/publication/ofr89668 ID - ofr89668 ER -