American Public Health Association. (1981). Glossary: Water and wastewater control engineering (3rd ed.). American Public Health Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)American Public Health Association. Glossary: Water and Wastewater Control Engineering. 3rd ed. Washington: American Public Health Association, 1981.
Παραπομπή σε μορφή MLA (9th εκδ.)American Public Health Association. Glossary: Water and Wastewater Control Engineering. 3rd ed. American Public Health Association, 1981.
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