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The most fruitful research dealing directly with language education in terms of social-class differences belongs to the English sociologist Basil Bernstein. |
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Basil Bernstein, who is an English sociologist, has dealt directly with social-class differences in language education and has come up with fruitful research. |
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The most fruitful research dealing directly with social-class differences in language education is that of the English sociologist Basil Bernstein. |
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The English sociologist Basil Bernstein has done fruitful research dealing directly with social-class differences in language education. |
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The most fruitful research dealing directly with social-class differences in language education was done by the English sociologist Basil Bernstein. |