First Edition. 78 pages. Paperback book with green cover. Library stamp to front cover. Loosely inserted diagram to front, with tears to edges. BIOS Final Report No 1319. Design and Production of Valve,Cocks, Sluice and Weir Gates and Screen Raking Machines in Germany. Pages are mostly clean overall, with moderate tanning throughout. Staple binding is firm with noticeable rust. Text is unaffected. Paper covers have mild edge wear with creasing and scuffing. Visible sunning to spine. Rust marks to covers. Noticeable black markings overall.