1 نتائج 'water quality'
Water quality (en)
Water analysis, Water chemistry
Brackish water, Desalination, Drinking water, Environmental health, Environmental quality, Saline water, Sanitation, Waste water, Water pollution, Water security
Science
> Hydrology
Calidad del agua (es), Качество воды (ru), نوعية المياه (ar), جودة المياه (ar), Qualité de l'eau (fr)
http://vocabularies.unesco.org/thesaurus/concept190