Reduction of Twenty Years' Photographic Records: of the barometer and dry-bulb and wet-bulb thermometers, and twenty-seven years' observations of the earth thermometers, made at the Royal Observatory
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Reduction of Twenty Years' Photographic Records: of the barometer and dry-bulb and wet-bulb thermometers, and twenty-seven years' observations of the earth thermometers, made at the Royal Observatory
