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theme_ss:"Suchmaschinen"
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theme_ss:"Information Gateway"
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theme_ss:"Klassifikationssysteme im Online-Retrieval"
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Place, E.: Internationale Zusammenarbeit bei Internet Subject Gateways (1999)
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Place, E.: International collaboration on Internet subject gateways (2000)
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Peereboom, M.: DutchESS : Dutch Electronic Subject Service - a Dutch national collaborative effort (2000)
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