EN 27487-3 prA-1993 信息处理.以修正频率7958ft/rad每毫米1.9道两面调制录制的130mm(5.25英寸)盒式软磁盘数据交换.第3部分:磁道格式(ISO7487-3-86Technical Corri-gendum 1-91)
Information processing; data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 7958 ftprad, 1,9 tpmm (48 tpi), on both sides; part 3: track format B (ISO 7487-3:1986 Technical Corrigendum 1:1991)