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David J. Mangen

6 books found

Cover of Customers Say What Companies Don't Want to Hear

Customers Say What Companies Don't Want to Hear

Richard A. Lee David J. Mangen · First published 2006

Cover of Measurement of intergenerational relations

Measurement of intergenerational relations

David J. Mangen, Vern L. Bengtson · First published 1988

Cover of Health, Program Evaluation, and Demography

Health, Program Evaluation, and Demography

David J. Mangen · First published 1984

Cover of Clinical and Social Psychology

Clinical and Social Psychology

David J. Mangen, Warren A. Peterson · First published 1982

Cover of Research instruments in social gerontology

Research instruments in social gerontology

David J. Mangen · First published 1982

Cover of Social Roles and Social Participation

Social Roles and Social Participation

David J. Mangen, Warren A. Peterson · First published 1982