

A New Mathematical Thriller from Dr. EccoIn 'Codes, Puzzles, and Conspiracy, ' readers have the opportunity to participate in the adventures of the book's detective-hero. Escapes, battles, and essential clues turn on original puzzles, games, and codes. No extensive mathematical...

![Codigos, Enigmas E Conspiraçõe Codigos, Enigmas... [Portuguese] 9726623901 Book Cover](https://m.media-amazon.com/images/I/41j5tQ5lVLL._SL500_.jpg)