Compass variation affected by geological
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Benjamin Smith Lyman
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Article
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1897
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Elsevier Science
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English
โ 245 KB
Compass Uariation. 281 means already arrived at. The process is purely an inductive one. The machine of the future resides potential in the machine of the present. Which is the fittest of present systems to give it birth I leave you to determine. One thing is certain. The machine of the future will