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020 _a019437081X
082 _a371.34
_bELL
_223
100 _aELLIS, Rod
245 _aUnderstanding second language acquisition
_c/[by] Rod Ellis
260 _aOxford
_bOxford University press
_c1987
300 _a327 p.
500 _aIncludes glossary, references and index.
942 _cS