000 00261nam a22001097a 4500
082 _a500.207
_bP18
084 _2Colon Classification
100 _aSunil Kushwaha
245 _aUGC-CSIR-NET: Physical sciences
260 _aNew Delhi
_bDanika
_c2018
942 _cBK
999 _c219677
_d219677