Variation in second language acquisition.
Gass, Susan M.
Conference on Applied Linguistics(11th :1987 :University of Michigan)
Clevedon : Multilingual Matters,
1989.
"Selected papers presented at the XIth Michigan Conference in Applied Linguistics "Variation in Second Language Acquisition", held October 7-9, 1987 at the University of Michigan at Ann Arbor."--Preface.
Includes bibliographical references and index.
Language and languages
Sociolinguistics