ID:DA04662936
Lippitt, Ron
Lippitt, R.
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by Kurt Lewin, Ronald Lippitt, Sibylle Korsch Escalona
University of Iowa Press 1940 University of Iowa studies . Studies in child welfare ; v. 16, no. 3
1
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[s.n.] [19--]
by Ronald Lippitt, Robert Fox, Lucille Schaible
Science Research Associates, Chicago
teacher's guide
