Structuring cooperative learning : lesson plans for teachers 1987 / editors Roger T. Johnson, David W. Johnson and Edythe Johnson Holubec. - Edina : Interaction Book Company, 1987. - xii, 339 p. : ill. ; 28 cm. ISBN: 0939603004 Subjects--Topical Terms: Education, CooperativeCooperative learning Dewey Class. No.: 371.36