TY  - BOOK
TI  - Mga Yamang Tubig
SN  - 1475P805394
U1  - 553 
PY  - 2005///
CY  - Manila, Philippines
PB  - National Bookstrore, Inc, 
KW  - Yamang tubig
KW  - Chart
KW  - Philippines
KW  - Water Resources
ER  -