Envitonmental Protection Agency (EPA). (1977). Process design manual wastewater treatment facilities for sewered small: Epa-625/1-77-009 (1a ed.). Epa(Environmental Protection Agency.
Cita Chicago Style (17a ed.)Envitonmental Protection Agency (EPA). Process Design Manual Wastewater Treatment Facilities for Sewered Small: Epa-625/1-77-009. 1a ed. Cincinnati: Epa(Environmental Protection Agency, 1977.
Cita MLA (9a ed.)Envitonmental Protection Agency (EPA). Process Design Manual Wastewater Treatment Facilities for Sewered Small: Epa-625/1-77-009. 1a ed. Epa(Environmental Protection Agency, 1977.
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