22 ore 28 min, 30 nov 1963 anni - By the time President Lyndon Johnson signed into law the first Clean Air Act in December 1963 it was later amended in 1966, 1970, 1977, and 1990—America's air had been under siege for decades.
Descrizione:
Clean air actAggiunto al nastro di tempo:
Data:
22 ore 28 min, 30 nov 1963 anni
Adesso
~ 61 years ago