00715cam a2200241 4500 377040662 TxAuBib 20170330120000.0 160210s2016||||||||||||||||||||||||eng|u 51167 Project Gutenberg PGUSA eng TxAuBib Keith, Donald, 1930-1985. Butterfly 9 [Gutenberg] / Donald Keith. Project Gutenberg, 2016. Public domain in the USA. Text. Engineers -- Fiction. Science fiction. Short stories. Time travel -- Fiction. Husband and wife -- Fiction. Kidnapping -- Fiction. http://www.gutenberg.org/ebooks/51167