TY  - BOOK
AU  - Welch,Paul S.
TI  - Limnological methods / 
SN  - 8185375704
U1  - 551.482 
PY  - 2003///
CY  - Delhi : 
PB  - Narendra Publishing House , 
KW  - LIMNOLOGY
N1  - Includes bibliographical references aand index
ER  -