DIN EN 28860-1:1991-12
Отменен
Information processing; data interchange on 90 mm (3,5 in) flexible disk cartridges using modified frequency modulation recording at 7958 ftprad, on 80 tracks on each side; part 1: dimensional, physical and magnetic characteristics (ISO 8860-1:1987); german version EN 28860-1:1989
— 19 стр.
