1. IOR/W/L/PS/21/N4/31C 1938 Reference (shelfmark): IOR/W/L/PS/21/N4/31C 1938 Title: Sheet 31C CHAHBAR First Edition 1938. Scope & Content: Previous Preliminary Editions 1913, 1919, 1922. Registered 1937. Reg.No.1683 D'37 (6 D.O.–3/8") 500. Collection Area: Map Collections Languages: English Date Range: 1938 Extent: 1 sheet