000 00271nam a2200121Ia 4500
008 220201s1993 xx 000 0 eng d
082 _a651.7
_bPFE
100 _aPFeipfer, J.W.
245 0 _aLecturettes theory and models.
260 _c1993
300 _a93
942 _2ddc
999 _c7103
_d7103