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 Reihenfolge der Bücher
- 2014
Gratisversand in ganz Deutschland!
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.