00579cam a2200193 4500 449502750 TxAuBib 20201113120000.0 201103s2020||||||||||||||||||||||||eng|u 63615 Project Gutenberg PGUSA eng TxAuBib Macpherson, Hector Carsewell. A Century's Progress in Astronomy [Gutenberg] / Hector Macpherson. Project Gutenberg, 2020. Public domain in the USA. Text. Astronomy -- History. http://www.gutenberg.org/ebooks/63615 TXTLL