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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1970 año - Clean Air Act expanded (established in '63; revised in '65, '70, ''77, '90)

Descripción:

The Clean Air Act is a United States federal law designed to control air pollution on a national level. It is one of the United States' first and most influential modern environmental laws, and one of the most comprehensive air quality laws in the world

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Enviornmental Timeline

BySoughtout
29 ago 2017
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fecha:

1 ene 1970 año
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~ 55 years ago
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