DS DS/EN 28630-3 RET. 1
DS DSEN 28630-3 RET 1 1994-MAY-25 nformaton processng - Data nterchange on 130 mm 525 n flexble dsk cartrdges usng modfed frequency modulaton recordng at 13 262 ftprad on 80 tracks on each sde - Part 3 Tracks format B for 80 tracks