P. Berger, and T. Luckmann. The Social Construction of Reality. Doubleday, New York, New York, USA, 1966.
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B. Langefors. Theoretical Analysis of Information Systems. Studentlitteratur, Lund, Sweden, EU, 1966.
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B. Langefors. Samband mella object och verklighet (Model Field and Object Field Correspondence). Technical report: TB-ADB 66, Stockholm University, Stockholm, Sweden, EU, 1966, In Swedish.
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M. Polanyi. The Tacit Dimension. Routledge & Kegan Paul, London, United Kingdom, EU, 1966.
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