The towers of Titan, by Ben Bova 72339 [Author: Ben Bova] [Illustrator: Ed Emshwiller] [Link: https://www.gutenberg.org/7/2/3/3/72339] [File: 72339-0.txt] Thanks to Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net Regards, Jacqueline