Direccion general de comunicaciones; convenio postal celebrado en Paris el 1. de junio de 1878, revision de Viena, 4 julio 1891 [microform]. - Congress Postal International, 2d, Paris, 1878. (Quezon City Photoduplication Service. University of the Philippines Library, 1977)
Microfilmed with 18 other titles.
At head of title: Ministerio de la Governacion.
Originally published by Tipo-Litografia de Chofre, Manila,1893.
Keywords: Postal conventions