000 00292nam a2200109Ia 4500
008 231220s9999||||xx |||||||||||||| ||und||
020 _a9789354601286
100 _aRavi Agrahari
245 0 _aScience and Technology
260 _bMc.Graw Hill Education , PVT
_c2022
300 _aA XI .27 63+E9 P
999 _c40448
_d40448