When new computer-based codes threaten the International Science Fair, the G.A.S. kids go on an adventure through time to learn about codes and ciphers to save it.
Barbara Tinker Libros
Compra 10 libros por 10 € aquí!
When new computer-based codes threaten the International Science Fair, the G.A.S. kids go on an adventure through time to learn about codes and ciphers to save it.