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By "Girard College. Magnetic and Meteorological Observatory. "
Discussion of the magnetic and meteorological observations made at the Girard College Observatory, Philadelphia, in 1840, 1841, 1842, 1843, 1844, and 1845. By A. D. Bache.
By: Bache, A. D. - Schott, Charles A. - Girard College.
Publication info: Washington,Smithsonian Institution,1859-65
Contributed by: University of California Libraries (archive.org)