TY  - BOOK
AU  - Jurgen Schwoerbel
TI  - Methods of hydrobiology : Fresh water biology
SN  - 08-006604-6
U1  - 574.929 
PY  - 1970///
CY  - London
PB  - Pergamon Press
N1  - Jurgen Schwoerbel: Methods of hydrobiology : Fresh water biology.  London.  Pergamon Press, 1970. 08-006604-6--(574.929SCH)
ER  -