DIN EN ISO 20321:2020-07 Petroleum, petrochemical and natural gas industries - Safety of machineries - Powered elevators (ISO 20321:2020); German version EN ISO 20321:2020
2020DIN EN ISO 20321:2020-07 Petroleum, petrochemical and natural gas industries - Safety of machineries - Powered elevators (ISO 20321:2020); German version EN ISO 20321:2020
2020DIN EN ISO 20321:2020 Petroleum, petrochemical and natural gas industries - Safety of machineries - Powered elevators (ISO 20321:2020)