TY  - BOOK
AU  - Sharma,R.S.
TI  - Encyclopaedia of Education: Environmental education Vol 7
SN  - 978-81-7169-719-9
AV  -  LB 15 .E531 2008 V.7 
CY  - New delhi
PB  -  Commonwealth publishers; 2008
KW  - Education-Encyclopaedias
ER  -