Environmental Movement (1 ene 1960 año – 1 ene 1970 año)
Descripción:
In the United States today, the organized environmental movement is represented by a wide ... The modern Environmental movement, which began in the 1960s with concern about air and water pollution.
Añadido al timeline:
fecha:
1 ene 1960 año
1 ene 1970 año
~ 10 years