TY - BOOK TI - Science and mathematics education in the United States ; eight innovations: proceedings of a conference SN - 92-64-13918-4 U1 - 509.73 S416s PY - 1993/// CY - París [Francia] PB - Organisation for Economic Co-operation and Development KW - CIENCIA KW - ESTUDIO Y ENSEÑANZA KW - E.U.A KW - MATEMATICAS ER -