TY  - BOOK
AU  - Welch,Paul S., x
AU  - x
TI  - Limnological methods: x
SN  - 8185375801 
U1  - 551.48/W441l 
PY  - 2003///
CY  - Delhi
PB  - 2003
KW  - Limnology
KW  - Hydrology
ER  -