Octavo, landscape-oriented. Eight scenes laud the progression of industry and the work ethic of its laborers. By manipulating movable elements, the reader can participate in agriculture, manufacturing, medicine, and infrastructure, processing grain, sending automobiles through a factory, even deep-sea diving. Bound in illustrated stiff paper covers, somewhat creased, sunned at spine, and with cellotape repair to upper panel. The complex interior is remarkably intact and operable, save loss of boat propeller fin and base of crane. Very good.