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Lines of equal magnetic horizontal intensity in western Canada for 1917
Lines of equal magnetic horizontal intensity in western Canada for 1917

Lines of equal magnetic horizontal intensity in western Canada for 1917

Date1917
Format
DimensionsScale 100 miles to one inch; 33 x 45 cm
Extent
  • Scale 100 miles to one inch; 33 x 45 cm
Language
Usage Rights Public Domain (Learn More)
Call Number / Accession Number538-7-C12-3-SMALL
Dewey Number538.7 C12.3 SMALL