000 00272nam a2200109Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
100 _aSpiegel, Murray R
245 0 _aComplex variabless
260 _aNew Delhi
_bTata Mc Graw-Hill
_c2010
942 _cGB
999 _c32463
_d32463