IND-IIA-F001-I20
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Unidad documental simple
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08-04-1921
Parte de Official and personal files of John Evershed with other Directors, famous astronomers and global institutes
The letter was about acknowledging John Evershed for his invaluable help gave them. Further he was seeking help on two points that, one was having a coolie to climb up the pillar and unclamp and the second was spectrum of Sirius.
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