No Edition Remarks. 28 pages. This is an ex-Library book. Blue paperback report. Full title: Bios Final Report No. 773. No 9 & 22. Manufacture of Photographic Developing Substances at I.g. Farbenfabrik, Wolfen. Text is typed not printed. Correction insert to front. Expected library inserts, stamps and inscriptions. Pages are mildly tanned throughout. Text is clear. Binding remains firm. Covers have mild edge-wear with curling to corners. Visible tanning to spine and edges with scuffing to spine ends.