Index of /pdf/burroughs/Disk/Floppy
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   DIR /pdf/burroughs/Disk
   DIR B8489-11_-12_8in_HS_88tk
   DIR B9489-17_-18_Industry_Standard_Mini_Disk_ICMD_8in_SS_77tk
   DIR B9489-21_-23_3Mb_Super_Mini_Disk_8in_SS_142tk
   DIR MD_122_3Mb_8in_SS_139tk
   DIR patents
   DIR TP424_Dual_5in
   IMG characteristics.png