Index of /pdf/rca/spectra70
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   DIR /pdf/rca
   DIR btss
   DIR model15
   DIR model25
   DIR model35_45_55
   DIR model46
   DIR periph
   DIR photos
   DIR tdos
   DIR tsos
   DIR vmos_univac_series_70
       70-00-011_Spectra70InstPlanGde_Mar67.pdf
       70-00-601_Spectra70_System_Info_Man_Dec64.pdf
       70-00-610_SystemStds_Jun67.pdf
       BF-000-1-00_SPECTRA_InfoMan_Dec70.pdf
       Totaro_Time_Sharing_Spectra-70_Style_196707.pdf