URI:
       Index of /pdf/ibm/system3/tape
       _______________________________
       
   DIR /pdf/ibm/system3
       GA32-0022-0_IBM_3410_3411_MagneticTapeSubsystems_ComponentDescription_Dec72.pdf
       GC21-5040-3_IBM_System3_MagneticTape_ProgramPlanningManual_June78.pdf