1. IOR/W/L/PS/21/N4/17F 1928 Reference (shelfmark): IOR/W/L/PS/21/N4/17F 1928 Title: Sheet 17F DEH BID Second (Revised) Preliminary Edition 1928. Scope & Content: Revised edition (considerable changes) 2nd 1928 (sheet now classified Preliminary). Previous edition 1st 1912. Reg.No.3810 D.28 (D.O.6). 500. Collection Area: Map Collections Languages: English Date Range: 1928 Extent: 1 sheet