00532cam a2200181 4500 378172428 TxAuBib 20170401120000.0 160421s2016||||||||||||||||||||||||eng|u 51823 Project Gutenberg PGUSA eng TxAuBib Barr, Stephen, 1930-1985. The Back of Our Heads [Gutenberg] / Stephen Barr. Project Gutenberg, 2016. Public domain in the USA. Text. Science fiction. http://www.gutenberg.org/ebooks/51823