000 00296nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aCharles C carico
245 0 _aSystems of linear equations and inequalities
260 _bWads worth
260 _c1974
365 _b
_2.75
942 _cBK
999 _c199923
_d199923