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Let's Look at Water 1947 Aċċess Unlimited Ħieles

Let's Look at Water 1947 Aċċess Unlimited Ħieles

This short documentary shows how a city's water supply is purified at a filtration plant. The complex system of the underground mains that supply all parts of the city with water is also illustrated, as is the safeguarding of water supplies on trains, ships and aircrafts.

Runtime: 21 minuti

Kwalità: HD

Rilaxx: Jan 01, 1947

Pajjiż: Canada

Lingwa: English

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