1.

Mathematical puzzles & diversions form scientificamerican Martin Gardner

Mathematical puzzles & diversions form scientificamerican מאת Martin Gardner

2.

Rescue the queen - A DIARY OF THE FRENCH REVOLUTIO N 1789-1793 Axel Von Fersen

Rescue the queen - A DIARY OF THE FRENCH REVOLUTIO N 1789-1793 מאת Axel Von Fersen