1954. Second impression. 264 pages. No dust jacket. Pictorial paper covered boards with cloth spine. Black and white diagrams throughout. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Some cracking to gutters with exposed netting. Binding slightly loose. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned and sunned, particularly spine. Boards are slightly bowed. Book has slight forward lean.