Mysterious Disappearances Pearce, Q. L. Discusses cases of mysterious disappearances, such as that of Ambrose Bierce or Amelia Earhart. CHF 47.90 In Warenkorb legen
Math Logic, Grades 6 - 12 Pearce, Q. L. Presented in three skill levels, these logic problems meet NCTM standards for reasoning and proof as well as problem solving. CHF 19.50 In Warenkorb legen