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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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21 nov 1967 año - Air Quality Act

Descripción:

-increased government control over air pollution

-regional system to combat air pollution - difficult to enforce

-followed by Clean Air Act in 1970 - federal standards to control pollution

Añadido al timeline:

IB History: US domestic policy

ByRoella Smith
1 may 2018
0
0
2013

fecha:

21 nov 1967 año
Ahora mismo
~ 57 years ago
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