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Allen, B.L.: Information tasks : toward a user-centred approach to information systems (1996) 0.02

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Footnote: Rez in: Information processing and management 33(1997) no.6, S.807 (P. Borlund)

Allen, B.L.: Visualization and cognitve abilities (1998) 0.01

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Date: 22. 9.1997 19:16:05

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