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Verlag: Smithsonian Institution, 1929., Washington:, 1929
Anbieter: Jeff Weber Rare Books, Montreux, VAUD, Schweiz
At head of title: Smithsonian Miscellaneous Collections, Vol. 82, No. 3, November 16, 1929. Hodgkins Fund. 242 x 162 mm. 8vo. [ii], 12 pp. 7 tables, 2 large folding plates (i.e.: printed on both sides). Printed wrappers. Fine. In 1907 Charles Abbot determined the solar constant (the quantity of ray energy crossing one square centimeter of surface set perpendicular to the solar rays outside the earth's atmosphere or one astronomical unit from the sun).
Verlag: o. O., 26. IV. 1949., 1949
Anbieter: Kotte Autographs GmbH, Roßhaupten, Deutschland
Manuskript / Papierantiquität
32mo. 1 p.