000 00262nam a2200097 4500
245 _aLinear partial differential operators
_cLars, Hormander
100 _aHormander, Lars
260 _aBerlin
_bSpringer-Verlag
_c1964
300 _a284p.; 24cm
082 _a515.724
_bHOR
999 _c29612
_d29612