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The Gateway is an online repository of Oklahoma history. You may browse through hundreds of thousands of newspaper pages dating from the 1840s to the 1920s. The Gateway provides free access to 211,481 issues and 989,986 pages of his ...

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Offers well-researched information covering all aspects of human impact to the environment. Its collection of scholarly, government and general-interest titles includes content on global warming, green building, pollution, sustainable agriculture, renewab ...