Secular variation of the magnetic declination in the United States and at some foreign stations
Schott, Charles A.
Secular variation of the magnetic declination in the United States and at some foreign stations Charles A. Schott - 7th ed. - Washington, D. C. US Coast and Geodetic Survey 1890 - illus
Secular VariationMagnetic Declination
550.3 / SCH
Secular variation of the magnetic declination in the United States and at some foreign stations Charles A. Schott - 7th ed. - Washington, D. C. US Coast and Geodetic Survey 1890 - illus
Secular VariationMagnetic Declination
550.3 / SCH