Bolivia 1:250,000, "Projecto Precambrico".
[Tolworth] : Directorate of Overseas Surveys for the Government of Bolivia,
[1981-87]
Geology mapped by I.G.S. and Services Geológico de Bolivia.
Legend in Spanish and Eng.
Magdalena -- Puerto Villazón -- Huachi -- Perseveráncia -- Huanchaca -- Ascensión de Guarayos -- Monte Verde -- Manomó -- Concepción -- San Ignacio de Velasco -- Las Petras-San Matías -- San José de Chiquitos -- Santo Corazón-Roboré -- Rincón del Tigre-La Gaiba.