Seventh edition. 159 pages. No dust jacket. Green cloth covered boards. Black and white photographs. Black and white fold-out plans. Colour frontispiece. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. A previous owner's name to front. Boards have heavy shelf wear with bumping and fraying to corners and crushing, fraying and tearing to spine ends and edges. All surfaces tanned and sunned, particularly spine.