13 h 18 m, 1 ene 1972 año - The Environmental Protection Agency's sister law, the Marine Mammal Protection Act, was signed in 1972, and was the world's first law that mandated an ecosystem approach to marine resource management.
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Marine Mammal Protection ActAñadido al timeline:
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13 h 18 m, 1 ene 1972 año
Ahora mismo
~ 53 years ago