Hopper, Earl, ed. Readings in the theory of educational systems. London: Hutchinson University Library, 1971. 336 stran. Sociology; 166. Open University set book.
Hopper, E. (1971). Readings in the theory of educational systems. London: Hutchinson University Library.
Styl ChicagoHopper, Earl. Readings in the Theory of Educational Systems. London: Hutchinson University Library, 1971.
Citace podle MLAHopper, Earl. Readings in the Theory of Educational Systems. London: Hutchinson University Library, 1971.
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