000 00315nam a2200121Ia 4500
001 2670
008 150525s9999 xx 000 0 und d
020 _a0 444 86277 3
100 _aKnowles Ian
245 _aSpectral Theory Of Differential Operators
250 _a0
260 _aAmsterdam
_bNorth-Holland Pub.Co.
_c1981
999 _c30089
_d30089