TY  - BOOK
AU  - Welch,Paul S.
TI  - Limnological methods
U1  - 551.48 23
PY  - 1948///
CY  - New York
PB  - McGraw-Hill
KW  - Limnology
KW  - Freshwater biology
KW  - Research
N1  - Includes bibliographies and index
ER  -