00856nam a2200205Ia 4500 CTU_40793 210402s9999 xx 000 0 und d 372.4145 L755 Ling, Daniel Cumulative record of speech skill acquisition Daniel Ling Washington, D.C Alexander Graham Bell 1978 The book was designed so that an individual's progress could be traced throughout the period over which spoken language is developed. It provides a systematically ordered means of verifying when the various subskills of speech are mastered, and how long the mastery of each requires. Reading Phonetic methods,Study and teaching ( higher ) Minh, 010405 Trung tâm Học liệu Trường Đại học Cần Thơ