000 00305nam a22001337a 4500
999 _c3038
_d3038
008 170116b xxu||||| |||| 00| 0 eng d
082 _a530.15
100 _aGupta, B.D.
245 _aMathematical physics
250 _a2nd
260 _aNew Delhi
_bVikas Pub.
_c1993
300 _av.p. :
942 _2ddc
_cBK