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author_ss:"Carstensen, K.-U."
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author_ss:"Wätjen, H.-J."
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language_ss:"d"
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theme_ss:"Klassifikationssysteme im Online-Retrieval"
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type_ss:"el"
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year_i:[1990 TO 2000}
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Wätjen, H.-J.; Diekmann, B.; Möller, G.; Carstensen, K.-U.: Bericht zum DFG-Projekt: GERHARD : German Harvest Automated Retrieval and Directory (1998)
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