Weeks Law- gave the president authority to purchase forestlands for river watersheds protection (20 h 23 min, 9 sept. 1911 ans – 11 h 59 min, 2 nov 1911 ans)
Ajouté au bande de temps:
Date:
20 h 23 min, 9 sept. 1911 ans
11 h 59 min, 2 nov 1911 ans
~ 1 months and 24 days
