By Shepherd Craig   Aagard Steven   in Educational Gerontology

ISSN:1521-0472|37|7|606-620

Routledge Ltd‎(2011)‎

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By Aldosemani Tahani   Shepherd Craig   in TechTrends

ISSN:8756-3894|58|2|46-58

Springer Publishing Company ‎(2014)‎

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By Shepherd Craig   Günter Hannes   in International Journal of Productivity and Performance Management

ISSN:1741-0401|55|3-4|242-258

Emerald Group Publishing Ltd‎(2006)‎

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