TY  - BOOK
AU  - Ward,Henry Baldwin
AU  -  Whipple, George Chandler
AU  - Edmondson, W. T. 
TI  - Fresh-water biology
U1  - 578.76 23
PY  - 1959///
CY  - New York
PB  - Wiley
KW  - Freshwater biology
N1  - Includes bibliographies and index
ER  -