2020-01-152020-01-15http://hdl.handle.net/1885/1978536 MB1 map169 MB1 map300 dpiimage/jpgimage/tiffenCopyright ExpiredTopographyPhilippines -- MapsPhilippines, Palawan, Puerto Princesa, PCGS Series, Sheet 2531, 1964, 1:250 00019642020-01-15