Indian Ocean : Curves of Equal Magnetic Variation For 1880, From the Latest Official Information

By: Contributor(s): Material type: MapMapPublication details: Calcutta Marine Survey Department 1881Description: 1 Map Colour Map 42 X 65Subject(s): Genre/Form: DDC classification:
  • 912.54 Sea
Summary: The Red Shows Approximate Annual Increase, The Blue Annual Decrease, And The White Space No Changes. The Amount of Annual Increase or Decrease is Expressed in Minutes of Arc
Item type: Maps
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Maps Maps Asiatic Society of Mumbai 912.54 Sea (Browse shelf(Opens below)) Not For Loan MAP0006

The Red Shows Approximate Annual Increase, The Blue Annual Decrease, And The White Space No Changes.
The Amount of Annual Increase or Decrease is Expressed in Minutes of Arc