Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1901 and 1904 Results of observations made at the Coast and Geodetic Surv...

by Hazard, Daniel L.
Published 1909

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1905 and 1906 Results of observations made at the Coast and Geodetic Surv...

by Hazard, Daniel L.
Published 1909

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1907 and 1908 Results of observations made at the Coast and Geodetic Surv...

by Hazard, Daniel L.
Published 1911

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1909 and 1910 Results of observations made at the Coast and Geodetic Surv...

by Hazard, Daniel L.
Published 1912

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1911 and 1912 Results of observations made at the Coast and Geodetic Surv...

by Hazard, Daniel L.
Published 1913

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory near Tucson, Arizona 1911 and 1912 Results of observations made at the Coast and Geodetic Survey...

by Hazard, Daniel L.
Published 1914

Results of magnetic observations made by the United States Coast and Geodetic Survey in 1914 Results of magnetic observations made by the United States Coast and Geodetic Survey in...

by Hazard, Daniel L.
Published 1915

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1913 and 1914 Results of observations made at the Coast and Geodetic Surv...

by Hazard, Daniel L.
Published 1915

Results of magnetic observations made by the United States Coast and Geodetic Survey in 1915 Results of magnetic observations made by the United States Coast and Geodetic Survey in...

by Hazard, Daniel L.
Published 1916

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory near Tucson, Arizona 1913 and 1914 Results of observations made at the Coast and Geodetic Survey...

by Hazard, Daniel L.
Published 1916

Results of magnetic observations made by the United States Coast and Geodetic Survey in 1916 Results of magnetic observations made by the United States Coast and Geodetic Survey in...

by Hazard, Daniel L.
Published 1917

Results of magnetic observations made by the United States Coast and Geodetic Survey in 1917 Results of magnetic observations made by the United States Coast and Geodetic Survey in...

by Hazard, Daniel L.
Published 1918

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory near Tucson, Arizona 1915 and 1916 Results of observations made at the Coast and Geodetic Survey...

by Hazard, Daniel L.
Published 1918

Results of observations made at the Coast and Geodetic Survey Magnetic Observatory at Cheltenham, Maryland 1915 and 1916 Results of observations made at the Coast and Geodetic Surv...

by Hazard, Daniel L.
Published 1918

Results of magnetic observations made by the United States Coast and Geodetic Survey in 1918 Results of magnetic observations made by the United States Coast and Geodetic Survey in...

by Hazard, Daniel L.
Published 1919

Results of magnetic observations made by the United States Coast and Geodetic Survey in 1919 Results of magnetic observations made by the United States Coast and Geodetic Survey in...

by Hazard, Daniel L.
Published 1920