000 00252 a2200097 4500
001 18504
100 _aTychnor & samarehi
245 _aPartial differential equation of mathematical physics
260 _a
_bHolden day iuc
_c1964
090 _c13740
_d13740
942 _aNUST-CAE
_cM
_c4159
999 _c253577
_d253577