TY  - BOOK
AU  - Wesley Eckenfelder, W.
AU  - Grau, Petr,
TI  - Activated sludge process design and control: Theory and practice 
T2  - Water quality management library
SN  - 0877628890
AV  - TD768 A37
PY  - 1992///
CY  - Lancaster
PB  - Technomic
KW  - Aguas residuales
ER  -