000 00312nam a2200109Ia 4500
008 231004s9999 xx 000 0 und d
020 _a0-1943-7000-3
090 _a401.93 LIG
100 0 _aPatsy M. Lightbown, Nina Spada
245 0 0 _aHow languages are learned - 2nd edition
260 _aOxford Universiti Press
_c1999
999 _c7929
_d7929