TY  - BOOK
AU  - Alagappan,Valli
AU  - Dyall,Shirley
TI  - Science: environmental studies one
SN  - 0333922930 (pbk)
U1  - 333.714 22
PY  - 2002///
CY  - Chennai
PB  - Macmillan
KW  - Environmental science
KW  - Examinations, questions, etc
N1  - First published `1995`
ER  -