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Group Work Practice: An Integration of Experience, Theory and PracticeJun 1 2008by Edcil Wickham and William Palech
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The Logic of Collective Action: Public Goods and the Theory of Groups, Second printing with new preface and appendix...Jan 31 1971by Mancur Olson Jr.
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Group Counseling and Psychotherapy With Children and Adolescents: Theory, Research, and PracticeAug 1 2006by Zipora Shechtman
Naive Lie TheoryJul 24 2008by John Stillwell