000 00258nam a2200109Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
100 _aAatre, Vasudev, K
_97589
245 0 _aABCD
260 _bNew Delhi
300 _a593p.
_b295
650 _aOperating systems
999 _c136907
_d136907