TY  - BOOK
ED  - Water Pollution Control Federation
TI  - Wastewater treatment skill training:  : anaerobic digestion
AV  - TD769 W38 1981
PY  - 1981///
CY  - Washington, District of Columbia
PB  - Water Pollution Control Federation
KW  - Aguas residuales
KW  - Purificación
N1  - V.1 Administration guide --; V.2 Workbook
ER  -