TY  - BOOK
AU  - Swan,Michael
AU  - Smith,Bernard
TI  - Learner English: a teacher's guide to interference and other problems 
SN  - 0521262836
PY  - 1987///
CY  - Cambridge, UK
PB  - Cambridge University Press
KW  - English language
KW  - Study and teaching
KW  - Foreign speakers
KW  - Interference (Linguistics)
ER  -