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  1. Voigt, K.; Benz, J.; Brüggemann, R.: ¬The Internet as an information source for environmental chemicals : first results of the evaluation of the metadatabase of Internet resources (1996) 10.60
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    Author
    Brüggemann, R.
  2. Voigt, K.; Brüggemann, R.: Evaluation criteria for environmental and chemical databases (1998) 10.60
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    Brüggemann, R.