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...
Pub. by order of the Board of admiralty...

APA Citation

Royal Greenwich Observatory. (1878). 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... London: Printed by G.E. Eyre and W. Spottiswoode for H.M. Stationery Off..

MLA Citation

Royal Greenwich Observatory. 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... London: Printed by G.E. Eyre and W. Spottiswoode for H.M. Stationery Off., 1878.