TY  - GEN
AU  - Harrison,John R
AU  - Deis,Gary C.
ED  - Water Pollution Control Federation.
ED  - Water Pollution Control Federation.
TI  - O & M of trickling filters, RBCs, and related
T2  - Manual of practice. Operations and maintenance series
SN  - 0943244757
U1  - 628.3 52 19
PY  - 1988///
CY  - Alexandria, Va.
PB  - Water Pollution Control Federation
KW  - Sewage
KW  - Purification
KW  - Fixed-film biological
ER  -