The Shorter Science and Civilisation in China. An abridgement of Joseph Needham's original Text : volume 4 [The Main Sections of volume IV, Part 2 of the Major Series] : Engineers, their Status, Tools & Materials ; Basic Mechanical Principles and Types of Machines ; Land Transport ; Clock Work ; Windmills & Aeronautics - Needham, Joseph, 1900-1995; Ronan, Colin A., 1920-1995 (Cambridge : Cambridge University Press, 1994)