edited by Philip Ward
Clarendon Press, 1978
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Eckersley, C. E. (Charles Ewart), 1892-1967, author
Longmans, Green and Co., 1953
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Lea, Christine
New York: Oxford University Press, 1993,
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Clarendon Press , 1995
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Hall, Pauline Cook
Linguistic Society of America, 1956
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