Вие търсихте за: автор = Johnson, David W.
Cooperative Learning in the Classroom / David W. Johnson, Roger T. Johnson, Edythe J. Holubec . - Alexandria : Association for Supervision and Curriculum Development, 1994. - 110 p. ; 23 cm. Съдържа: References p. 109-110 ISBN: 0-87120-239-5 УДК 371.31(73)
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