IND-IIA-F001-I07
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Unidad documental simple
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03-01-1912
Parte de Official and personal files of John Evershed with other Directors, famous astronomers and global institutes
This letter was about informing Gilbert T. Walker of sending a slide of the Nova Acquilae Spectrum with Arctururs above it for comparison taken at the Kodaikanal Observatory on the night of June 19-20.
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