Transcription of FEATURES SHOWN ON TOPOGRAPHIC MAPS - USGS
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FEATURES SHOWN ON TOPOGRAPHIC MAPS - USGS
GEOLOGICAL SURVEY CIRCULAR 368 FEATURES SHOWN ON TOPOGRAPHIC MAPS UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director GEOLOGICAL SURVEY CIRCULAR 368 FEATURES SHOWN ON TOPOGRAPHIC MAPS By John B. Rowland Washington, D. C., 1955 Free on application to the Geological Survey, Washington 25, D. C. GEOLOGICAL SURVEY TOPOGRAPHIC INSTRUCTIONS Chapter 1 B 3 FEATURES SHOWN ON TOPOGRAPHIC MAPS Contents Abstract .. Principles of map representation 1. Definition of a n1ap a. TOPOGRAPHIC map .. b. Planimetric map .. 2. Elements of map construction.
topographic maps of the Survey. b. Planimetric map. --A planimetric map is similar to a topographic map, except that it does not portray relief in a measurable form. The Survey publishes some planimetric maps for use until they can be replaced by topographic maps. 1 The number 1 B 3 signifies Book 1, Part B, Chapter 3 of the
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