No. 9. Luzon.
No. 9. Luzon. Islas Filipinas Observatorio de Manila. United States Coast and Geodetic Survey. No. 9. Longitud E. del Meridiano de Greenwich. A. Hoen & Co., Baltimore. (1899)
David RumseyU.S. Coast and Geodetic Survey
1899
1899
U.S. Coast and Geodetic Survey
1:535 000