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Glenview, Ill. [u.a.]: Scott, Foresman and Co., 1987
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New York [u.a.]: Longman, 1997
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Elsevier BV, 1988
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Elsevier BV, 1988
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SAGE Publications, 1986
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Elsevier BV, 1985
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SAGE Publications, 1983
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American Educational Research Association (AERA), 1983
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SAGE Publications, 1979
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SAGE Publications, 1980
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Elsevier BV, 1981
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Springer Science and Business Media LLC, 1977
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Informa UK Limited, 1972
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SAGE Publications, 1971
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American Educational Research Association (AERA), 1971
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Elsevier BV, 1984
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American Psychological Association (APA), 1975
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SAGE Publications, 1987
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Wiley, 1988
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SAGE Publications, 1979