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1by George, Darren
Published 2012Book -
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3by Creswell, John W.
Published 2009Book -
4by Meier, Kenneth J., 1950-
Published 2009Book -
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10by Babbie, Earl R.
Published 2003Book -
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15
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18by Lipsey, Mark W.
Published 1990Book -
19by Strauss, Anselm L.
Published 1990Book -
20