The Modern School practices series
University of Minnesota Press
E. Paul Torrance
University of Minnesota Press [1963] The Modern School practices series no. 5
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E. Paul Torrance, editor
Minnesota University , Oxford University Press c1960 The Modern School practices series no.4
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Willis E. Dugan, editor ; keynote papers by E.G. Williamson & Carl R. Rogers
University of Minnesota Press c1959 The Modern School practices series no. 3
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by C. Gilbert Wrenn and Willis E. Dugan
University of Minnesota Press c1950 The Modern School practices series no. 1