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Morse, P.M.: Search theory and browsing (1970)
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Morse, P.M.: Browsing and search theory (1973)
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Pejtersen, A.M.: Investigation of search strategies in fiction based on an analysis of 134 user-librarian conversations (1979)
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Bates, M.J.: Information search tactics (1979)
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Bates, M.J.: Idea tactics (1979)
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