TY - BOOK AU - Boer,Bart De TI - The Origins of vowel systems SN - 0198299656 : U1 - 415 PY - 2001/// CY - New York PB - The Oxford University Press KW - Vowels KW - Language and languages KW - Origin KW - Language acquisition KW - Study and teaching N1 - Includes index; Bibliography: p. 145-153 ER -