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Poynder, R.: Web research engines? (1996)
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Peereboom, M.: DutchESS : Dutch Electronic Subject Service - a Dutch national collaborative effort (2000)
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Jenkins, C.: Automatic classification of Web resources using Java and Dewey Decimal Classification (1998)
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Place, E.: Internationale Zusammenarbeit bei Internet Subject Gateways (1999)
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Ardo, A.; Lundberg, S.: ¬A regional distributed WWW search and indexing service : the DESIRE way (1998)
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Place, E.: International collaboration on Internet subject gateways (2000)
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