"Research Triangle Institute." . . "Municipal Environmental Research Laboratory." . . "Sewage disposal plants." . . . . "Microformes" . . . . . . . . . . . . . . . "Collection and analysis of purgeable organics emitted from wastewater treatment plants" . . . . "Collection and analysis of purgeable organics emitted from wastewater treatment plants"@en . . "Publications officielles" . . . . . . . . . . . . . "United States." . . "Sewage disposal plants United States." . . "United States Environmental Protection Agency" . . "Organic compounds." . .