000 00297nam a2200121Ia 4500
008 190829s9999 xx 000 0 und d
082 _a541.363
_bGUR/PH
100 _aGURDEEP RAJ
245 0 _aPHASE RULE
250 _a3rd Ed.
260 _bGoel Publishing House, Meerut
_aMeerut
_c1991
942 _cBK
999 _c8484
_d8484