Beachams Guide to the Endangered Species of North America cover Climate Change: In Context cover Endangered Species, ed. 2 cover Environmental Encyclopedia, ed. 3 cover Environmental Encyclopedia, ed. 4 cover Environmental Issues: Essential Primary Sources cover Grzimeks Animal Life Encyclopedia: Extinction cover Grzimeks Animal Life Encyclopedia: Evolution cover UXL Encyclopedia of Biomes, ed. 2 cover Worldmark Encyclopedia of U.S. and Canadian Environmental Issues cover