TY  - BOOK
AU  - Horan,N.J.
TI  - Biological wastewater treatment systems: theory and operation
SN  - 0471924253
PY  - 1990///
CY  - Chichester
PB  - John Wiley & Sons
KW  - Sewage
KW  - Purification
KW  - Biological treatment
ER  -