1. IOR/R/20/B/135 Reference (shelfmark): IOR/R/20/B/135 Title: File 3/126 Acts and Regulations: The Petroleum and Carbide and Calcium (Amendment) Rules, 1940 Collection Area: India Office Records and Private Papers Languages: English Date Range: 31 May 1940-31 Jul 1940 Extent: 1 file