Montana ( Valley county) porcupine valley surveyed in 1909-1910

By: Contributor(s): Material type: MapMapPublication details: Washinngton US Geological Survey 1918Description: 1 Map Coloured 52 x 42 cmGenre/Form: DDC classification:
  • 912.786
Summary: Datum is mean sea levelSummary: Approximate mean sea declination, 1916
Item type: Maps
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Item type Current library Call number Status Date due Barcode
Maps Maps Asiatic Society of Mumbai 912.786 (Browse shelf(Opens below)) Not For Loan MAP0692

Datum is mean sea level

Approximate mean sea declination, 1916