No Edition Stated. 198 pages. No dust jacket. Brown cloth covered boards. Many fold out tables and diagrams. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Previous price to front endpaper. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned, particularly spine. Gilt lettering remains bright and clear. Some additional slight marks and staining to surfaces. Boards are slightly bowed.