TY  - BOOK
AU  -  Welch , Paul S.
TI  - Limnological Methods
SN  - 070691754
U1  - 551.48 
PY  - 1948///
CY  - New York: 
PB  - Mc Grawhill, 
KW  - Biological Method
KW  - Chemical Method
KW  - Earth Science
KW  - Hydrographic Mapping
ER  -