Mapping situation in Africa.
1986
详细记录
符号E/ECA/NRD/CART/18
标题Mapping situation in Africa.
日期[Addis Ababa] : UN, 22 Oct. 1986.
描述
5 p.
备注
At head of title: 6th United Nations Regional Cartographic Conference for Africa, Addis Ababa, 10-21 November 1986.