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Williams, J.; Ebe, T.: STN Easy : point-and-click patent searching on the World Wide Web (1997)
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Blake, P.: ¬The arrival of free patent information : Internet provision of patent information for free is affecting vendors (1998)
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O'Leary, M.: STN Easy solves sci-tech search woes : Web-based service opens powerful searching to sci-tech end users (1997)
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White, M.J.: Patents and patent searching (2009)
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Barker, A.L.: DataStar Web : a comparison with 'classic' DataStar command language searching (1998)
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