Scans of Old Maps tagged with 'Magnetic variation'

Thumbnail View Map Title Book Title Published Period Covered Publisher "Lines of Equal Magnetic Variation or Declination" Tags: (magnetic variation, world, magnetosphere) 600 DPI Our Earth and its Story - Vol 3 (en) 1889 1888 Cassell "Ghana - Isogonic" Tags: (ghana, magnetic variation, isogonic) 1200 DPI Portfolio of Ghana Maps (en) 1965 1965 Survey of Ghana

Found 2 Maps