Lines of Equal Magnetic Variation or Declination (1888) Our Earth and its Story - Vol 3 Published: 1889 Language: en Publisher: Cassell Tags: (magnetic variation, world, magnetosphere) 600 DPI 
Ghana - Isogonic (1965) Portfolio of Ghana Maps Published: 1965 Language: en Publisher: Survey of Ghana Tags: (ghana, magnetic variation, isogonic) 1200 DPI |
Found 2 Maps
