The Rule of FourTurtleback, 21. ágú. 2012 - 386 síður For use in schools and libraries only. Endeavoring to decipher a five-hundred-year old text that weaves a mathematical labyrinth within a love story, researchers Tom Sullivan and Paul Harris obtain a diary that may contain the key to the code, but when a fellow researcher is killed, they realize that the book contains a dangerous secret. |