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more general categories information about this item Biological Sciences Biological Sciences evolution (9385) extinction (851) Calendar Year Calendar Year Year (337475) 2009 (40843) Geographical Locations Geographical Locations North America (16962) United States (12631) Eastern United States (3664) Northeastern United States (1235) Massachusetts (138) Natural Resources, Earth and Environmental Sciences Natural Resources, Earth and Environmental Sciences ecology (54081) plant ecology (8129) community ecology (22291) biodiversity (9506) species diversity (5446) population ecology (15287) population characteristics (15194) population dynamics (4125) natural resource management (11559) natural resources conservation (2048) conservation areas (958) natural resources (75944) biological resources (55960) indigenous species (2411) biodiversity (9504) species diversity (5446) land resources (17347) conservation areas (958) suburban areas (83) Plant Science and Plant Products Plant Science and Plant Products plant ecology (8129) Reference Types Reference Types Journal (337546) Research, Technology and Engineering Research, Technology and Engineering research (30526) research methods (29174) surveys (5011) Abstract of Article: Will be presented in next release Date Last Accessed: Accessed January 20, 2015 Title of Article: Changes in the flora of Thoreau's Concord Author(s) of Article: Will be identified in next release Citation: Biological conservation 2009 v.142 no.3 pp. 500-508 Click to View: (Click to View) Date of Publication: 2009 Location of Article: http://pubag.nal.usda.gov/pubag/article.xhtml?id=747131 Name of Publication: Biological conservation Publishing Company: Will be identified in next release Accession Number: 286359