2003. Placer County Geographic Information Systems. Land cover of west Placer County is a polygon feature describing vegetation, vernal pool complexes and urban areas. The data was created on behalf ... Placer County Geographic Information Systems.
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Relief shown by contours and spot heights. Contour interval 5 feet. Text and ill. on verso. Surveyed in 1908-1909. R.B. Marshall, chief geographer,... U.S. Geological Survey.