000 00269nam a2200109Ia 4500
001 652
008 231023s9999 xx 000 0 und d
100 1 _aRamalho, José Antonio
245 1 0 _aNorton Utilities 6 a su alcance
260 _aMcGraw-Hill 1993,
_c1993
999 _c61216
_d61216
942 _n1