TY  - BOOK
AU  - Andaya, Cynthia V.
TI  - Understanding the earth through environmental science
SN  - 9789715847049
U1  - 574.52 An2u 
PY  - 2008///
CY  - Quezon City
PB  - C & E Publishing
KW  - Earth science
KW  - Environmental science
ER  -