Elementary school science 4

Xehetasun bibliografikoak
Erakunde egilea:	Science Education Center, University of the Philippine
Formatua:	Liburua
Hizkuntza:	English
Argitaratua:	Quezon City Science Education Center University of the Philippines, c1974.
Gaiak:	Science > nis-Problems, questions, exercises. Science > Study and teaching.