Ballantine, New York, 1980, 1^st ed/pr thus.  ISBN 0-345-28639-1.  MMPB, 213 pages.  Good plus; wraps show light edge wear, some rubs and impressions, some age toning; binding sound with reading creases.  Interior clean and unmarked, pages tanned; black & white photo section.  ‘The Russians claim it never went down.  But the CIA spent half a billion dollars to bring it back up. … On the ocean floor lay an ultra-secret decoding device that could make every Soviet naval secret an open book.  It was three miles down.  The Russians didn’t have the technology to reach it.  The U.S. did.’ (from rear wrap)