Politica interior informe secreto - Mas, Sinibaldo de 1809-1868.; Botor, Carlos (Manila [s.n.], 1963)
The 3rd volume of the author's informe sobre el estado de las Islas Filipinas en 1842 (Madrid, 1849) secretly printed at the same time.
Keywords: Philippines -- Politics and government -- 1812-1898.