000 00317nam a2200121Ia 4500
001 82420
008 170722s9999 xx 000 0 und d
100 _aEllis, Rod
245 _aUnderstanding second language acquisition /
260 _aOxford :
_bOxford uty press ,
_c1987.
300 _a327 p.
_c24cms
942 _cGEN
999 _c108865
_d108865