TY  - BOOK
AU  - Rana,S.V.S.
AU  - 
TI  - Essentials of ecology and environmental science 
SN  - 978 81 203 3894 4    
U1  - 574.5/R185e 
PY  - 0000///PHI Learning
PY  - 2010///
CY  - New Delhi 
KW  - Ecology
KW  - Environmental science
N1  - Includes index(P559-568) and bibliography and glossary(P543-558)
ER  -