Vaillant, George E. (2002): The Study of Adult Development, in: Erin Phelps, Frank F. Furst- enberg and Anne Colby (eds.): Looking at lives. American longitudinal studies of the twentieth century, New York, 116-132.
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Vaillant, G. E. (2002). The Study of Adult Development. New York: Looking at lives. American longitudinal studies of the twentieth century, pp. 116-132.
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