"Royal Greenwich Observatory." . . "Atmosphere pressure." . . "Great Britain. Admiralty." . . "Humidity." . . "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, Greenwich: under the direction of Sir George Biddell Airy ... astronomer royal"@en . "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, Greenwich: under the direction of Sir George Biddell Airy ... astronomer royal" . . . . . . . . "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, Greenwich"@en . . . . . . . . . . . . . . . . "Atmospheric pressure." . . . . "Earth temperature." . .