000 00297nam a2200121Ia 4500
008 220201s1964 xx 000 0 eng d
082 _a621.31921
100 _aAngelo, E James & Papolus, Athanasis
245 0 _aPolo- zero patterns
260 _bMc graw hill
_c1964
300 _a73
942 _2ddc
999 _c76317
_d76317