TY - BOOK T1 - Science activities for elemntary children A1 - Nelson, Leslie Weldemar A2 - Lorbber, George C. joint author LA - English PP - Dubuque, Iowa PB - Brown YR - 1959 UL - https://ds.mainlib.upd.edu.ph/Record/UP-99796217603663387 OP - 178 CN - Q 181 N42 1959 KW - Science : Study and teaching. ER -