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Type: BOOK - Published: 1915 - Publisher:
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Type: BOOK - Published: 1915 - Publisher:
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Type: BOOK - Published: 1912 - Publisher:
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Type: BOOK - Published: 2018-02-13 - Publisher: Forgotten Books
Excerpt from Land Magnetic Observations 1911-1913, And, Reports on Special Researches While the Department, as before, has extended special aid at times to cert