00358nam a2200121Ia 4500003000600000005001700006008004100023020001800064040002500082082002800107245005600135260004500191NORSU20240813025752.0240215s9999    xx            000 0 und d  a971-570-123-X  aNORSU-DumcNORSU-Dum  aFil 372.35 P88 III 2003 0aPractical Work in Elementary School Science Grade 3  bUniversity of the Philippine Pressc2003