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  • × author_ss:"Olson, H.A."
  1. Olson, H.A.; Boll, J.J.: Subject analysis in online catalogs (2001) 5.97
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  2. Lee, H.-L.; Olson, H.A.: Hierarchical navigation : an exploration of Yahoo! directories (2005) 5.97
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  3. Olson, H.A.; Boll, J.J.: Subject access in online catalogs (2001) 5.97
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