| Type |  Book |
| ชื่อเรื่อง | Onsite wastewater treatment systems manual / Office of Water, Office of Research and Development, U. S. Environmental Protection Agency |
| ISBN | 0756727324 |
| พิมพลักษณ์ | [Washington, D.C.] : The Agency, 2002 |
| รูปเล่ม | 1 v. (various pagings) : ill |
| หัวเรื่อง | Sewage disposal in the ground |
| | Sewage disposal plants --Design and construction [] |
| | Sewage disposal, Rural |
| | Water treatment plans |