000 00249nam a22001097a 4500
020 _a9788174825278
082 _a500.207
_bP21
100 _aSurekha, Tomar
245 _aCSIR- UGC Physical Sciences
260 _aNew Delhi
_bUpkar
_c2021
942 _cBK
999 _c672599
_d672599