TY  - BOOK
TI  - Earth science: the Philippines in focus : teacher's guide
SN  - 971-135-118-8
U1  - Prof. 550.7 E416 
PY  - 0000///c[?]
CY  - Philippines
PB  - Institute for Science and Mathematics Education Development
KW  - Earth sciences
KW  - Study and teachings
N1  - Includes index
ER  -