TY  - BOOK
AU  - Welch,Paul Smith
TI  - Limnological methods
AV  - QH96 .W39
U1  - 574.929 
PY  - 1948///]
CY  - Philadelphia
PB  - Blakiston Co.
KW  - Freshwater biology
KW  - Research
KW  - Limnology
N1  - Includes bibliographies
ER  -