For more details read Freddie's booklet "A Day at the Hamburg Observatory" in the PIPs. View left to right and top down. I couldn't resist to share this with you.
CC BY-NC-SA 4.0
The 11. PiP (2nd row right) The Astronomic Library containing approximately 70.000 volumes
de.wikipedia.org/wiki/Hamburger_Sternwarte
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Boarischa Krautmo said:
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Herb Riddle said:
Best Wishes. Herb
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