FEATURES SHOWN ON TOPOGRAPHIC MAPS - USGS

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Scales, contour intervals, accuracy specifica­ tions, and features that are shown on the maps have been developed gradually over a period of years to satisfy the requirements of government­ al agencies, industry, and the general public. Because these maps serve a wide variety of uses--scientific, engineering, military, and ad­

  Into, Topographic, Specifica, 173 tion