1970DIN 2137-1 E:2018-04 Keyboards for data and text input - Part 1: German keyboard layout
2018DIN 2137-1:2018 Keyboards for data and text input - Part 1: German keyboard layout; Text in German and English
2012DIN 2137-1:2012 Keyboards for data and text input - Part 1: German keyboard layout; Text in German and English
1995DIN 2137-1:1995 Text and office systems - Keyboards - Part 1: German keyboard for typewriters; key arrangement and allocation of characters to keys
1970DIN 2137-1:1988 Keyboards for data and text input - Part 1: German keyboard layout
1970DIN 2137-1 E:1984-09 Keyboards for data and text input - Part 1: German keyboard layout
1970DIN 2137-1:1976 Keyboards for data and text input - Part 1: German keyboard layout