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veevarustussüsteemi eri rõhutasanditega piirkonnad, areas with different stress levels in the water supply system
pressure zones . Veevarustuse ja kanalisatsiooniga seotud terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//evkis/pressure%20zones/1/eng (07.07.2026)
