Columbia subject headings:
Constructed wetlands--United States--Case studies.
Habitat (Ecology)--Modification--United States--Case studies.
Sewage--Purification--Biological treatment--United States--Case studies.
Harvard subject headings:
Constructed wetlands--United States--Case studies.
Habitat (Ecology)--Modification--United States--Case studies.
Sewage--Purification--Biological treatment--United States--Case studies.
Princeton subject headings:
Case studies.
Constructed wetlands--United States--Case studies.
Habitat (Ecology)--Modification--United States--Case studies.
Sewage--Purification--Biological treatment--United States--Case studies.