Robert F. DeVellis

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Scale Development: Theory and Applications (Applied Social Research Methods)
DeVellis, Robert F.

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� 4.43

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Scale Development: Theory and Applications (Applied Social Research Methods)
DeVellis, Robert F.

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� 4.68

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Scale Development: Theory and Applications (Applied Social Research Methods)
Devellis, Robert F.

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� 16.04

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Scale Development: Theory and Applications (Applied Social Research Methods)
DeVellis, Robert F.; Thorpe, Carolyn T.

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� 45.37

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