The History of Terrorism
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Container categories
Main topic classifications
Human behavior
Human activities
Environmental protection
Environmental conservation
1887-Today Conservation movement
1922-Today Save the Planet (Environmentalism)
1964 The Wilderness Act
Attachments
Wilderness Act
Parents
1922-Today Save the Planet (Environmentalism)
Howard Clinton Zahniser
Children
1964-Today National Wilderness Preservation System (NWPS)
1992-Today United Nations/Agenda 21/Post-2015 Development Agenda