00289    a2200109   4500020001500000082001600015100001700031245002600048260003100074300002100105650005300126  a817029374X  a005.44bJAI  aJain, Satish  aDos 6 & 6.2 companion  aNew DelhibBPBc1994g1994  axv, 415p.c23cm.  aOperating systems for specific types of computer