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- [4] US Geological Survey national flood frequency program - Version 3.0 FLOODPLAIN MANAGEMENT IN A MULTI-FACETED WORLD, 1997, : 165 - 170
- [5] The role of the US geological survey in science delivery to The National Park Service Protecting Our Diverse Heritage: The Role of Parks, Protected Areas, and Cultural Sites, 2004, : 7 - 9