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Magnetic observation of sunspots, 1917-1924
[by] George E. Hale [and] Seth B. Nicholson

APA Citation

Hale, G. Ellery., Nicholson, S. Barnes. (1938). Magnetic observation of sunspots, 1917-1924. Washington, D. C.: Carnegie institution of Washington.

MLA Citation

Hale, George Ellery, 1868-1938, and Seth Barnes Nicholson. Magnetic Observation of Sunspots, 1917-1924. Washington, D. C.: Carnegie institution of Washington, 1938.

Warning: These citations may not always be complete (especially for serials).