A classification system for water and wastewater facilities and personnel.
| Author/creator | Association of Boards of Certification for Operating Personnel in Water and Wastewater Utilities |
| Other author | United States. Environmental Protection Agency. Office of Water Program Operations. |
| Format | Book |
| Publication Info | [Place of publication not identified] : [publisher not identified], 1974. |
| Description | 33 pages |
| Subjects |
| General note | Prepared for Office of Water Program Operations, U.S. Environmental Protection Agency. |
| Govt. docs number | EP 2.2:C 56 |