GB/T 20257.4-2017国家基本比例尺地图图式第4部分:1:2500001:5000001:1000000地形图图式国家标准
英文:Cartographic symbols for national fundamental scale maps—Part4:Specifications for cartographic symbols 1︰250 000 1︰50...
英文:Cartographic symbols for national fundamental scale maps—Part4:Specifications for cartographic symbols 1︰250 000 1︰50...