000 00303nam a2200133Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
082 _a332.64 SOM:D
100 _aSomanathan T.V
245 0 _aDerivation
260 _aNew Delhi
_bCambridge
_c2018
300 _a326p
942 _cGB
999 _c31439
_d31439