33
/it/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
1066655
81262
2
Public Timelines
FAQ Ricevere il Premium

21 nov 1967 anni - Air Quality Act

Descrizione:

-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

Aggiunto al nastro di tempo:

Data:

21 nov 1967 anni
Adesso
~ 57 years ago