00575cam a2200193 4500 377035236 TxAuBib 20170330120000.0 150310s2015||||||||||||||||||||||||eng|u 48454 Project Gutenberg PGUSA eng TxAuBib Iles, George. Inventors at Work, with Chapters on Discovery [Gutenberg] / George Iles. Project Gutenberg, 2015. Public domain in the USA. Text. Inventions -- History. Inventors. http://www.gutenberg.org/ebooks/48454