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The first measurement of the deflection of the vertical in longitude - The figure of the earth in the early 19th century https://doi.org/10.1140/epjh/e2014-40055-2
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The first measurement of the deflection of the vertical in longitude - The figure of the earth in the early 19th century https://doi.org/10.1140/epjh/e2014-40055-2
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