URI:
       Index of /pdf/ibm/dasd/3340
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   DIR /pdf/ibm/dasd
       GA26-1619-4_Reference_Manual_for_IBM_3340_3344_Disk_Storage_197507.pdf
       GX20-1979-0_3340_Reference_Summary_Apr76.pdf
       GX20-1979-0_3340_Reference_Summary_Apr76_2up.pdf