33
/es/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
1066655
81262
2
Public Timelines
FAQ Obtener premium

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:

fecha:

21 nov 1967 año
Ahora mismo
~ 57 years ago