TY  - BOOK
TI  - Science and technology textbook
SN  - 9715400502
PY  - 1989///-92
CY  - Diliman, Q.C
PB  - Instructional Materials Corporation
KW  - Science
KW  - Study and teaching (Secondary)
KW  - Philippines
KW  - Technology
KW  - Study and teaching
N1  - Contents.--v.1 First Year.--v.2. Second Year.--v.3. Third Year.--v.4. Fourth Year
ER  -