One million things : a visual encyclopedia / contributors and consultants: Chris Barker, Hazel Beynon, Kim Bryan, Laura Buller, Jack Challoner, Peter Chrisp, Mike Goodman, Derek Harvey, Andrea Mills, Simon Mumford, [and 7 others].
A general pictorial reference guide covers topics arranged into such categories as nature, human body, science and technology, space, history, and art and culture.