found: Work cat.: 95008499: Ackerman, D. The rarest of the rare, 1995:p. 18 (endangered ecosystems)
found: LC database, March 21, 1995(endangered ecosystems)
found: Random House(endangered ... 2. threatened with extinction)
found: Cumberland Plain shale woodlands and shale-gravel transition forest, ©2010:t.p. (nationally threatened ecological community) p. 3 (threatened ecological communities)
found: The tropical deciduous forest of Alamos : biodiversity of a threatened ecosystem in Mexico, c2000.
notfound: Web. 3;Dict. ecology & environment;Biol. & agr. index