AMERICAN INDUSTRIESNo. 57. DECISIONS RELATING TO PATENTS. By the Acting Secretary of the Interior. By the Commissioner of Patents. .0 4 THE FRANKLIN SEARCH EXPEDITION. A Remarkable Group of Solar Spots., scientific american, 1880-10-09
AMERICAN INDUSTRIESNo. 57. DECISIONS RELATING TO PATENTS. By the Acting Secretary of the Interior. By the Commissioner of Patents. .0 4 THE FRANKLIN SEARCH EXPEDITION. A Remarkable Group of Solar Spots., scientific american, 1880-10-09
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