000 00295nam a2200121Ia 4500
100 _aBello, lgnacio
020 _a0-06-040613-5
942 _cBK
245 _aContemporary basic mathematical skills
260 _aHarper & Row, Publishers, New York
_c1978
082 _a511 Bel
300 _axvi,434
999 _c11444
_d11444