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19 mar 1972 ano - CWA (Clean Water Act)

Descrição:

An overhaul on the act from 1948 that increased the power of the filtration and added more things that need to be measured in the water.

Adicionado na linha do tempo:

Important Water Dates in History

28 jan 2018

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267

Data:

19 mar 1972 ano

Agora

~ 52 years ago

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