00550cam a2200181 4500 425495396 TxAuBib 20170519120000.0 060222s2006||||||||||||||||||||||||eng|u 17817 Project Gutenberg PGUSA eng TxAuBib Scientific American Supplement, No. 312, December 24, 1881 [Gutenberg] / Various. Project Gutenberg, 2006. Public domain in the USA. Text. Science -- Periodicals. http://www.gutenberg.org/ebooks/17817 TXGID