Stephen N. Elliot, Thomas R. Kratochwill, Joan Littlefield Cook, John F. Travers, authors
McGraw-Hill Book , 2000
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James A. Coleman; John Klapper
Routledge, 2005
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Sullivan, Peter, 1948-, author
Springer, 2013
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Richards, Jack C., author
Cambridge University Press, 2015
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Richards, Jack C., author
Cambridge University Press, 2006
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