00511cam a2200169 4500 100350274 TxAuBib 20070420120000.0 100803s2010||||||||||||||||||||||||eng|u 33337 Project Gutenberg PGUSA eng TxAuBib Turner, Herbert Hall. Astronomical Discovery [Gutenberg] / by Herbert Hall Turner. Project Gutenberg, 2010. Freely available. Electronic text. http://www.gutenberg.org/license Rights