Short factsheet on the design, operation, maintenance and costs of facultative ponds in the United States.
EPA (2002): Facultative Lagoons. (= Wastewater Technology Fact Sheet ). United States Environment Protection Agency URL [Accessed: 12.04.2010]Short factsheet on the design, operation, maintenance and costs of facultative ponds in the United States.
EPA (2002): Facultative Lagoons. (= Wastewater Technology Fact Sheet ). United States Environment Protection Agency URL [Accessed: 12.04.2010]