Lego Technic 42129 4x4 Mercedes-Benz Zetros Trial Truck - World Of Wonder Toys
BrickLink - Set 1030-1 : LEGO TECHNIC I: Simple Machines Set [Educational & Dacta:Technic] - BrickLink Reference Catalog
The LEGO Power Functions Idea Book, Vol. 1: Machines and Mechanisms (Lego Power Functions Idea Bk 1): Amazon.co.uk: Yoshihito Isogawa: 9781593276881: Books