Even though Geographic Information Systems GIS have been available for over 20 years, they have only recently become accessible to geographers and others as a useful tool in spacial analysis. This is a sampling of basic principles of GIS, as well as
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Even though Geographic Information Systems GIS have been available for over 20 years, they have only recently become accessible to geographers and others as a useful tool in spacial analysis. This is a sampling of basic principles of GIS, as well as
Read Less