Norton, Peter. Peter Norton`s complete guide to dos 6.22 / Peter Norton. - New Delhi : Techmedia , 1997. - xxx,1150p. : ill:figs ; 24cm . NULL ISBN: 8187105224 Rs.399.00 Subjects--Index Terms: OPERATING SYSTEMS (COMPUTER) MS DOS -6.22 Dewey Class. No.: 005.432 / NOR\P