Field operations of the Department of Terrestrial Magnetism, Carnegie Institution of Washington, for the year 1926–1927
1955 ◽
Vol 60
(3)
◽
pp. 367-368
1970 ◽
Vol 38
◽
pp. 151-153
1929 ◽
Vol 34
(2)
◽
pp. 151
◽