General Account of the Results of the Discussion of the Declinometer Observations Made at Girard College, Philadelphia, Between the Years 1840 to 1845, With Special Reference to the Eleven Year Period
Bache, A. D. (1860). General account of the results of the discussion of the declinometer observations made at Girard College, Philadelphia, between the years 1840 to 1845, with special reference to the eleven year period. American Journal of Science, s2-29(85), 36–43. https://doi.org/10.2475/ajs.s2-29.85.36