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HARTNELL George a:be george|k:0208 (1)
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HARTNELL, George
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Author: HARTNELL (George)
DE P OSITORY HARTNELL (George). Terrestrial magnetism. Horizontal intensity variometers. Washgton, 1922. See UNITED STATES OF AMERICA. Departments of State and Official Bodies. Departniç LComnroe. Coast and Geodetic [Special Publicatiofls.Zf No. 39.
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