Moore, William L., 1943- The Philadelphia experiment : : project invisibility : an account of a search for a secret Navy wartime project that may have succeeded-- too well / [electronic resource] / by William L. Moore in consultation with Charles Berlitz.. — 1st Ballantine Book ed.. — New York : : Fawcett Crest,, 1984, c1979.. — 288 p. : : ill. ; 18 cm.