TY - BOOK AU - AU - Long,Michael H. TI - An introduction to second language acquisition research SN - 0582553776 (pbk.) AV - P118.2 .L37 1991 U1 - 418 20 PY - 1991/// CY - London, New York PB - Longman KW - Second language acquisition KW - Research N1 - Includes bibliographical references (p. [334]-393) and index ER -