TY  - BOOK
AU  - PSUL S WELCH
TI  - LIMNOLOGICAL METHODS
SN  - 07-069175-4
AV  - QH 96.W45 1948 
PY  - 1948///
CY  - NEWYORK
PB  - MCGRAW HILL
KW  - Freshwater biology. Lakes
N1  - INCLUDES INDEX
ER  -