TY  - BOOK
AU  - Winkler M A
AU  - M A Winkler
TI  - Biological treatment of waste water
SN  - 083122040
U1  - 628.3 
PY  - 1981///
CY  - Chichester
PB  - Ellis horwood limited
KW  - Sludge process
KW  - Pollution control
KW  - Nitrogen removal
ER  -