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Poul Johansen has long experience as project manager and coordinator of large ... He is a Senior Research Scientist at the National Environmental Research ...
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Environmental information portal from the World Resources Institute. ... WRI Corporate Consultative Group. EarthTrends Delivered: Monthly Updates ...
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Fact Monster is a free reference site for students, teachers, and parents. Get homework help and find facts on thousands of subjects, including sports, ...
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Directory of reference materials on the Web, sorted by subject, with dictionaries, calculators, translation ... martindalecenter.com. A "Surfing the 3rd Wave at ...
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Wikipedia is a free, open content, community-built encyclopedia with thousands of articles on topics from A to Z. Available in dozens of languages.
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The World Book web site offers an encyclopedia, dictionary, atlas, homework help, ... Go to the World Book product sites listed below to view products and pricing: ...
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Official site of the Encyclopedia Britannica, one of the world's best-known reference books. Find short encyclopedia entries and definitions, or register for complete access.
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Encyclopedia Smithsonian, Links to on-line Smithsonian Resources and Answers to Frequently Asked Questions from Art to Zoo, Design, Crafts, Science, History, ...
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Comprehensive and interactive encyclopedia of mathematical equations, terms, derivations, and more, for students, educators, math enthusiasts, and researchers.
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