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Vietnam:From waste water to potting soil

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From waste water to potting soil

Waste water has a lot of value. There are useful substances in it. When two Cần Thơ City students realised this, they started to make potting soil from waste water.

Vietnam:From waste water to potting soil Vietnam:From waste water to potting soil Reviewed by Shahid Karimi on February 26, 2018 Rating: 5

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