TY  - BOOK
AU  - Schwoerbel,Jürgen
TI  - Methods of hydrobiology: (freshwater biology) 
SN  - 0080066046
U1  - 577.6 23
PY  - 1970///
CY  - New York
PB  - Pergamon Press
KW  - Freshwater biology
KW  - Research
KW  - Biological apparatus and supplies
N1  - Includes index
ER  -