1909. No edition remarks. 208 pages. No dust jacket. This is an ex-Library book. Pictorial cloth covered boards. Black and white photographs and diagrams. Ex library copy with associated labels, inserts, stamps and annotations. In German. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. 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.