TY  - BOOK
AU  - Eckenfelder,W.Wesley
AU  - Grau,Petr
TI  - Activated sludge process design and control: theory and practice 
T2  - Water quality management library
SN  - 1566766435
AV  - TD768 A37 1998
PY  - 1998///
CY  - Lancaster, Pennsylvania
PB  - Technomic
KW  - Aguas residuales
ER  -