2018DIN EN 9278:2018-11 Aerospace series - General Principles of Obsolescence Management of chemicals, materials and processes; German and English version EN 9278:2018
1970DIN EN 9278 E:2018-04 Aerospace series - General Principles of Obsolescence Management of chemicals, materials and processes
2018DIN EN 9278:2018 Aerospace series - General Principles of Obsolescence Management of chemicals, materials and processes; German and English version EN 9278:2018