TY  - BOOK
AU  - Bhalla, G.S
AU  - Khanna, Hema & Bahuguna, Sunder Lal 
TI  - Environmental education /		 	
SN  - 9788189915384
U1  - 333.7 BHA 
PY  - 2007///
CY  - New Delhi : 
PB  - Regal Publications
N1  - Includes Index.
ER  -