Grzimek's animal life encyclopedia : evolution Covers evolution in detail and explores it from a scientific viewpoint. Includes comprehensive coverage of recent ideas and discoveries in the field of evolution.
Grzimek’s animal life encyclopedia : extinction Explores all aspects of extinctions and extinct life, featuring approximately 80 articles outlining major extinctions and related scientific areas
Ecology basics 2 volume encyclopedia with 132 essays on key topics in ecology
Encyclopedia of coastal science A series of essays by authors from multiple disciplines exploring coastal geology, environmental science, oceanic sciences and more.
Encyclopedia of Life A free, online collaborative encyclopedia, an authoritative version of Wikipedia for biologists. It intends to document all living species of animals, plants, and other forms of life on Earth.
U.S. Fish & Wildlife Service Mission is to work with others to conserve, protect and enhance fish, wildlife and plants and their habitats for the continuing benefit of the American people.
Species+"Bringing you authoritative information on taxonomy, legislation, distribution and trade in MEA-listed species. Learn more."
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