Media type: E-Article Title: Variable competence in second language acquisition: A problem for research methodology? Contributor: Fulcher, Glenn imprint: Elsevier BV, 1995 Published in: System Language: English DOI: 10.1016/0346-251x(94)00055-b ISSN: 0346-251X Keywords: Linguistics and Language ; Education ; Language and Linguistics Origination: Footnote: