Amazonian History / Amazonian Ethnology / Rubber / Amazonian indigenous peoples / Rubber boom (caucho) / Pacaguara / History of Amazonian Region / Boom Del Caucho / Guarayos / Amazonian Historiography / Oriente Boliviano / época Del Caucho / Pacaguara / History of Amazonian Region / Boom Del Caucho / Guarayos / Amazonian Historiography / Oriente Boliviano / época Del Caucho