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2013-05-23 12:21
求翻译：The predecessors to GIS are unique uses of maps. Historically, maps were used solely for displaying geographic boundaries and features. One famous exception is a map of London created by Dr. John Snow in 1854. He suspected that an outbreak of cholera was tied to the water system. To investigate, he plotted the London w是什么意思？ 待解决
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The predecessors to GIS are unique uses of maps. Historically, maps were used solely for displaying geographic boundaries and features. One famous exception is a map of London created by Dr. John Snow in 1854. He suspected that an outbreak of cholera was tied to the water system. To investigate, he plotted the London w
问题补充： |
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