000 00247nam a2200097Ia 4500
008 190719s9999 xx 000 0 und d
100 _aD K Goel/ N K Garg
245 0 _aPrabandh ke siddhaant
260 _aNew Delhi
_bArya Bk Depot
_c2002
942 _cBK
999 _c11131
_d11131