TY  - BOOK
AU  - Singh,H R.
AU  - Nautiyal,P  .
TI  - Biodiversity and ecology of aquatic environments / 
SN  - 9788190609173
U1  - 577 
PY  - 2009///
CY  - Delhi : 
PB  - Narendra Publishing House , 
KW  - ECOLOGY
N1  - Includes index
ER  -