00567cam a2200193 4500 91758536 TxAuBib 20061207120000.0 100803s2010||||||||||||||||||||||||eng|u 33337 Project Gutenberg PGUSA eng TxAuBib Turner, Herbert Hall. Astronomical Discovery [Gutenberg] / by Herbert Hall Turner. Project Gutenberg, 2010. Project Gutenberg. Freely available. Electronic text. http://www.gutenberg.org/license Rights TXTLL