000 00269nam a22001097a 4500
999 _c223351
_d223351
020 _a9789388994385
082 _aR 371.262
_bCHO.C
100 _aChopra J K
245 _aEssays
_bThoruoghly Revised & Enlarged Edition
260 _aNew Delhi
_bUnique
_c2019
942 _cBK