Fifth edition. 266 pages. No dust jacket. Green cloth covered boards. Black and white photographs and diagrams. Pages with some foxing and tanning, particularly to endpapers and textblock edges. 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. Some additional moderate marks and staining.