TY - BOOK AU - Preston,Dennis Richard TI - Sociolinguistics and second language acquisition T2 - Language in society SN - 0631152458 U1 - 401/.9 19 PY - 1989/// CY - Oxford, UK, New York, NY, USA PB - B. Blackwell KW - Language and languages KW - Variation KW - Second language acquisition KW - Study and teaching N1 - Includes bibliogr. references (p. [288]-317) and index ER -