000 00316nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a621.38196425 D533
100 _aDHAMDHERE.D.M
245 0 _aINTRODUCTION TO SYSTEM SOFTWARE
260 _aNEW DELHI
_bTata McGraw-Hill
_c1986
300 _a24X18
942 _cBK
_2DDC
999 _c20599
_d20599