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A Century's Progress in Astronomy ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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331,929 braille cells · 352 embossed pages at 40×25 · 567 unrepresentable characters omitted

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