1965
The Associated Press
1827
Vandermaelen, Philippe, 1795-1869
1:2m
1864
MOUHOT, Alexandre Henri.
1827
Vandermaelen, Philippe, 1795-1869
1:2m
1900
Larousse
1954
St. Louis Post dispatch
1889
Pelet, Paul, 1849-1927
1:2m
1968
China Cartographic Publishing House
1:4m
1945
Perceval
1950
North-Vietnamese Geography Department
1:100k