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 . a. Colors and classes of FEATURES .. b. Lines and symbols .. c. Letters and numbers .. d. Map scale .. Problem of selecting FEATURES . 4. Selecting map FEATURES for a purpose 5. Other factors in selecting map Page 5 5 5 5 5 5 5 6 6 6 6 6 FEATURES .. 7 a. Legibility .. 7 b. Cost of production.
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. ...
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