000 00352nam a2200133Ia 4500
008 191014s9999 xx 000 0 und d
020 _a0-486-68035-5
082 _a515.742
_bLAN
100 _aCornelius Lanczos
_920358
245 0 _alinear Differential Operators
260 _aUSA
_bDover Publications INC.
_c1997
300 _aXvi,564
942 _cBK
999 _c530935
_d530935