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  1. International books in print plus : [Computerdatei] (1996) 0.03 
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    Isbn
    3-598-40347-X
  2. Zeitschriftendienst (ZD) : CD-ROM-Version (1999) 0.03 
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    Isbn
    3-87068-285-X
  3. Brinkman's cumulative catalogue on CD-ROM (1996-) 0.02 
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    Date
    16. 2.1997 16:22:51
  4. Deutsche Nationalbibliographie : CD-ROM 1972-1985 (1997) 0.01 
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    Date
    7. 5.2000 10:38:22

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