TY  - BOOK
AU  - Tayo, Gilma T. (et.al.)
TI  - Fundamentals of environmental science
SN  - 971-42-0458-5
U1  - Fil. 301.31 T210 C2004 
PY  - 2004///
CY  - Philippines
PB  - Trinitas Publishing, Inc.
ER  -