000 00297nam a2200121Ia 4500
008 190829s9999 xx 000 0 und d
082 _a530
_bSUR/U
100 _aSUREKHA SINGH
245 0 _aUGC - CSIR NET/ JRF/ SLET PHYSICS
250 _a1st Ed.
260 _bUpkar Prakashan
_aAgra
942 _cBK
999 _c13230
_d13230