wall, W. D. (1979). Constructive education for special groups. Unesco.
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Dyfyniad Arddull Chicago
wall, W D. Constructive Education for Special Groups. London: Unesco, 1979.
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Dyfyniad MLA
wall, W D. Constructive Education for Special Groups. Unesco, 1979.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.