000 00300nam a2200121Ia 4500
008 170101s1971 xx 000 0 und d
082 _a517 HEN
100 _aHenderson kenneth B.
245 0 _aPrecalculus Mathematics
260 _bMcGraw Hill Book Co.
_c1971
300 _a704 p.
942 _2ddc
_cB
999 _c443816
_d443816