- natural waste water purification
- естественная очистка сточных вод
Англо-русский словарь по экологии. 2011.
natural waste water purification
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Water purification — This article is about large scale, municipal water purification. For portable/emergency water purification, see portable water purification. For industrial water purification, see deionized water. For distilled water, see distilled water. Water… … Wikipedia
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