IS/IEC 60079-20: Electrical appratus for explosive gas atmospheres, Part 20: Data for flammable gases and vapours, relating to the use of electrical apparatus

IS/IEC 60079-20: Electrical appratus for explosive gas atmospheres, Part 20: Data for flammable gases and vapours, relating to the use of electrical apparatusBureau of Indian Standards · 1996 · Rights: US