TY  - BOOK
AU  - Santiago, Florenda I.
AU  - Dorado, Salvacion L.;Contreras, Lourdes E.;Aquino, Ma. Salvacion G.;Retondo, Elsinor P.;Lamorena, Melchora B.
TI  - Environmental science: a shared responsibility towards the earth 
SN  - 971232026X
AV  - TA 170 .S26 1996 
PY  - 1996///
CY  - Manila, Philippines
PB  - Rex Book Store
KW  - ENVIRONMENTAL SCIENCE
N1  - Includes bibliographical references; Unit I. Basic ecological concepts and the environment -- Unit II. Environmental threats -- Unit III. Prospects for the future
ER  -