U.S. Cities

5. The World Bank (2020) “Urban Population.” 6. U.S. Census Bureau (2012) United States Summary: 2010 Population and Housing Unit Counts. 2010 Census of Population and Housing. 7. Nowak, D. and E. Greenfield (2018) Declining Urban and Community Tree Cover in the United States. Journal of Urban Forestry and Urban Greening: 32-55. 8. ................
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