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Järvelin, K.; Vakkari, P.: ¬The evolution of library and information science 1965-1985 : a content analysis of journal titles (1993)
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- Information processing and management. 29(1993) no.1, S.129-144
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Vakkari, P.: Information seeking in context : a challenging metatheory (1997)
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- S.451-464
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Vakkari, P.; Kuokkanen, M.: Theory growth in information science : applications of the theory of science to a theory of information seeking (1997)
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- Journal of documentation. 53(1997) no.5, S.497-519
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Vakkari, P.: Task complexity, information types, search strategies and relevance : integrating studies on information retrieval and seeking (1999)
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- S.35-54