DS DS/EN 28860-1
DS DSEN 28860-1 1991-JUL-09 nformaton processng - Data nterchange on 90 mm 35 n flexble dsk cartrdges usng modfed frequency modulalaton recordng at 7 958 ftprad on 80 tracks on each sde - Part 1 Dmensonal physcal and magnetc characterstcs