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Van Epps, A.S.: ¬The evolution of electronic reference sources (2005) 0.01

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Date: 31.12.2008 19:41:21

Jordan, C.; Watters, C.: Addressing gaps in knowledge while reading (2009) 0.01

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Date: 5.11.2009 19:21:55

Geisselmann, F.: Access methods in a database of e-journals (2003) 0.00

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Date: 31. 8.2005 21:56:38

Deutsche Konkurrenz für Google Earth (2007) 0.00

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Date: 21. 2.1997 19:37:24

Lipow, A.G.: ¬The virtual reference librarian's handbook (2003) 0.00

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Date: 22. 3.2004 14:46:50

Janes, J.: Introduction to reference work in the digital age. (2003) 0.00

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Date: 22.10.2005 19:23:21

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