A must-have for any fan of Scott Westerfeld's Leviathan trilogy, The Manual of Aeronautics is an illustrated guide to the inner workings of the Darwinist and Clanker powers. Loaded with detailed descriptions and elaborate, four-color illustrations of Darwinist beasties and Clanker walkers, weapons, transport, and uniforms, this manual highlights the international powers that Deryn and Alek encounter throughout their around-the-world adventures. This guide draws back the curtain and reveals the inner depths of Westerfeld's fascinating alternative world.