000 00383nam a2200145Ia 4500
008 190601s9999 xx 000 0 und d
020 _a_
082 _a515.353
_bFRI
100 _aFriedman, Avner
245 0 _aPartial differential equations
260 _aNew York
_bHolt, Rinehart and Winston
_c1969
300 _a262 p.
650 _aPartial differential equations
942 _cS
999 _c120384
_d120383