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science.gov

Science.gov searches over 38 databases and 1,950 selected websites, offering 200 million pages of authoritative U.S. government science information, including research and development results.

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Zoological Record

Index to zoological literature with particular emphasis onsystematic/taxonomic information.

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Birds of the World Online

Guide to the birds of North America including descriptions, geographicdistribution information, systematic information, habitats, and more,complemented by images, sound files, and video clips.

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