Did the Masons encode messages in walls—and even in the street plan of Washington, D.C.? Does the Hebrew Bible conceal hidden mysteries? Ingenious methods for

Berloquins spellbinding look at codemaking through the ages will grab historyand cryptology buffs alike, as he looks at secret codes from ancient times tothe pr

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An account of the motivation research people, the advertising agency psychologists who analyze consumer desires and find out how to make people buy the things t