Succesvolle strijd tegen waterverontreiniging
Polygoon-Profilti (producent)
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Water exhibition in the RAI in Amsterdam with machines for water treatment, including fountains and water purification installations. In Hengelo, a water purification plant is being built by the Regge and Dinkel Water Board. With images of the pollution of the Regge and the Dinkel by industry. In Almelo the water is purified by means of a water purification installation.
Human-made No record of this work says a model made it. What this means.