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New York [u.a.]: Longman, 1993
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Weinheim; Basel: Beltz, 1978
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New York: MacKay, 1966-
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New York; Munich [u.a.]: Longman, 2001
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New York; Munich [u.a.]: Longman, 2001
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Informa UK Limited, 2002
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American Educational Research Association (AERA), 1994
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American Educational Research Association (AERA), 1994
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American Educational Research Association (AERA), 1984
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American Educational Research Association (AERA), 1984
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SAGE Publications, 1980
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American Educational Research Association (AERA), 1980
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SAGE Publications, 1980
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American Educational Research Association (AERA), 1980
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SAGE Publications, 1978
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SAGE Publications, 1975
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Informa UK Limited, 1962
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American Educational Research Association (AERA), 1957
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University of Chicago Press, 1956
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SAGE Publications, 1956