TY  - BOOK
AU  - Chhatwal, G.R.
AU  - Pandey, D.K.
AU  - Nanda, K.K.
TI  - Encyclopaedic Dicrtionary of Environment: H- P
SN  - 8170411009
U1  - REF 363.73903 CHH 
PY  - 1988///
CY  - New Delhi
PB  - Anmol Publications.
KW  - Encyclopaedic Dicrtionary of Environment
N1  - Vol 2
ER  -