TY  - BOOK
AU  - Agarwal, S K & Trivedi, P R
TI  - Encyclopaedia of environmental science and technology Vol-2: environmental education  
U1  - 333.703 AGA 
PY  - 2011///
CY  - New Delhi
PB  - A.P.H Publishing Corporation
N1  - Includers index
ER  -