000 00278nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aR rajgopalan
245 _aunderstanding computers
260 _bDelhi:TMH
_c1990
300 _a233p.
650 _aComputer
999 _c2205
_d2205