000 00286nam a2200109 4500
020 _a9788193359792
082 _a025.42 SES/STE.2
100 _aSeshagiri Rao V.A
245 _aStep by step Classification
_cby V.A. Seshagiri Rao
260 _aNew Delhi
_bEss Ess pub.
_c2017
942 _cBK
999 _c383513
_d383513