Geologic map of the Venezuela part of the Atabapo 2 degrees x 3 degrees Quadrangle, Amazonas Federal Territory, Venezuela - Wynn, J.W.; Olmore, S.D.; Mendoza, Vicente; Martinez, Miguel; Rincon, Haydee; Garcia, Andres; Rivero, Nelson; Rendon, Ines; Marcano, Iris; Lugo, Elis; Schruben, P. G. (Miscellaneous Field Studies Map, 1994)