000			00597nam a22001572 4500
020			_a0521387957
041			_aeng
082			_a418.007 _bD489
100			_aHarley, Birgit
245			_aThe development of second language proficiency
260			_aCambridge _bCambridge University Press _c1990
300			_axiv,248 p. _c24 cm.
500			_a000501 _aCH 501
650			_aLanguage and languages _xStudy and teaching _xCongresses _aSecond language acquisition _xCongresses _aBilingualism _xCongresses _aCurriculum subjects _aForeign languages _aLearning by students _aConference proceedings
942			_cBOOK
999			_c26743 _d26743