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Browse All : Atlas Map and Geomagnetism from 1850

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Heck, Johann Georg, -18...
Plate 28. Inclination C...
1850
World Atlas
Author
Heck, Johann Georg, -1857
Ewald, Ludwig 1813-1881...
No. 16. Isodynamen magn...
1850
World Atlas
Author
[Ewald, Ludwig 1813-1881, Bauerkeller, Georg Leonhart]
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