Objective EN.2 Restore, preserve and protect healthy natural habitats

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2. SF Urban Forest Council. 2008 Annual Report. Accessed at: http://www.sfenvironment.org/our_policies/overview.html?ssi=16#Reports
3. Parks for People: Why America Needs more City Parks and Open Space. San Francisco: The Trust for Public Land, 2003.
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9. Sullivan WC, Kuo FE, DePooter Sf. 2004. The fruit of urban nature: Vital neighborhood spaces. Environment and Behavior 36(5):678-700.