2019-12-162019-12-16http://hdl.handle.net/1885/1955306 MB1 map344 MB1 map300 dpiimage/jpgimage/tiffenCopyright ExpiredTopographicVietnam -- MapsVietnam, Ban Cao, Series: L7014, Sheet 6253 IV, 1967, 1:50 00019672019-12-16