Biyang - map search
Topographic map h50-4 of scale 1:500 000
Russian - Soviet military - 6Mb -
Topographic map nh50-11 of scale 1:250 000
English - US military - 1956 - 5Mb -
Topographic map h50-22 of scale 1:200 000
Russian - Soviet military - 17Mb -
Topographic map h12 of scale 1:1 000 000
English - US military - 1972 - 11Mb -
Topographic map nh50 of scale 1:1 000 000
English - US military - 1957 - 6Mb -
Topographic map h12-a of scale 1:500 000
English - US military - 1996 - 14Mb -