000 00297nam a2200121Ia 4500
005 20260329235638.0
008 260329s9999||||xx |||||||||||||| ||und||
082 _a505 Ag15T
100 _aAgarwal, Vishal
245 0 _a21st Century Science
260 _aDelhi
_bR.R. Prakashan
_c2019
942 _cBK
999 _c286218
_d286218