000 00306pam a2200121a 44500
010 _a67013673
082 _a530.157
_bL399OE
100 _aLavrentiev, M.M.
245 1 _aSOME IMPROPERLY POSED PROBLEMS OF MATHEMATICAL PHYSICS
260 _a
_bSpringer-Verlag
_c1997
964 _gCIRC
997 _aK13778 C
999 _c380544
_d380544