00650cam a2200205 4500 91748384 TxAuBib 20061207120000.0 061112s2006||||||||||||||||||||||||eng|u 19770 Project Gutenberg PGUSA eng TxAuBib Todhunter, I., (Isaac.) Spherical Trigonometry For the use of colleges and schools [Gutenberg] / by I., 1820-1884 Todhunter. Project Gutenberg, 2006. Project Gutenberg. Freely available. Electronic text. Spherical trigonometry. http://www.gutenberg.org/license Rights TXTLL