00304nam a2200109   450000100070000000500170000700800360002410000510006024500500011125000130016126400200017401213020260807101653.0260101s1993    pe      000 0 eng  d1 aPress Syndicate of the University of Cambridge10aTeacher´s Book 1. New Horizons: Science 5-16  a2.ª ed. 1aCambridgec1993