Michigan Elsie Quadrangle Surveyed in 1915-16 in Cooperation with the State of Michigan

By: Contributor(s): Material type: MapMapPublication details: Washington US Geological Survey 1918Description: 1 Map Coloured 52 x 42 cmGenre/Form: DDC classification:
  • 912.774
Summary: Datum is mean sea levelSummary: Approximate Mean Declination, 1915
Item type: Maps
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Datum is mean sea level

Approximate Mean Declination, 1915