EN 2070-1:1989/prA1:1992 AMD PRA1 Aerospace Series Aluminium and Aluminium Alloy Wrought Products - Technical Specification Part 1 - General Requirements
1992EN 2070-1:1989/prA1:1992 AMD PRA1 Aerospace Series Aluminium and Aluminium Alloy Wrought Products - Technical Specification Part 1 - General Requirements
1989EN 2070-1:1989 Aerospace Series Aluminium and Aluminium Alloy Wrought Products Technical Specification Part 1: General Requirements