1959. New Impression. 256 pages. No dust jacket. Red cloth covered boards. Black and white photographs and diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Minor pencil inscriptions to front free endpaper. 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.