000 00294nam a2200121Ia 4500
008 191024s9999||||xx |||||||||||||| ||und||
020 _a8190335334
100 _aAravind Gupta
245 0 _aComputer Basic
260 _bNirmal Sahithya Kendr
_aNew Delhi
_c2013
650 _aScience
942 _cBK
999 _c54690
_d54690