Hartwick, J. M. (1984). The persistence of qwerty and analogous seemingly suboptimal technologies. Department of Economics, Queen's University.
Chicago Style aipamenaHartwick, John M. The Persistence of Qwerty and Analogous Seemingly Suboptimal Technologies. Kingston, Ontario, Canada: Department of Economics, Queen's University, 1984.
MLA aipamenaHartwick, John M. The Persistence of Qwerty and Analogous Seemingly Suboptimal Technologies. Department of Economics, Queen's University, 1984.
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