00643cam a2200205 4500 490706081 TxAuBib 20200228120000.0 210227s2021||||||||||||||||||||||||eng|u 64649 Project Gutenberg PGUSA eng TxAuBib Clerke, Agnes M, 1842-1907, (Agnes Mary.) The Herschels and Modern Astronomy [Gutenberg] / Agnes M. Clerke. Project Gutenberg, 2021. Project Gutenberg ; 64649 Public domain in the USA. Text. Project Gutenberg ; 64649. http://www.gutenberg.org/ebooks/64649 TXGID