资讯

Nature11 个月
A Geological Sketch Map of Africa South of the Zambesi
A Geological Sketch Map of Africa South of the Zambesi. By E. P. T. Struben (London: Edward Stanford, 1896.) ...
Simon Fraser University8 年
Example 2: Creating an Outline Map of Africa
This example processes the MAPS.AFRICA map data set, supplied with SAS/GRAPH, to produce a new map data set that contains no internal boundaries. This is done by adding a new variable, REGION, to the ...