2019-12-162019-12-16http://hdl.handle.net/1885/1955796 MB1 map169 MB1 map300 dpiimage/jpgimage/tiffenCopyright ExpiredTopographicVietnam -- MapsVietnam , Phu Thien, Series: L7014, Sheet 6636 ll, 1969, 1:50 00019692019-12-16