TY - BOOK T1 - Characteristics of a good elementary science program A1 - Mechling, Kenneth R. A1 - Oliver, Donna L. LA - English PP - Washington, D.C. PB - National Science Teachers Association YR - 1983 UL - https://ds.mainlib.upd.edu.ph/Record/UP-99796217613576854 CN - Q 181 M46 1983 KW - Science : Study and teaching (Elementary) KW - Curriculum enrichment. ER -