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Amazon.com: The 6-Tone Phonetic System: A breakthrough in learning to pronounce English, Chinese, and other languages (English Pronunciation): 9798846752047: Woo, Edward P.H., YAO, DAVID: Books
![High tone in U where the vowel is high in Hu and/or Lamet (a) vs. low... | Download Scientific Diagram High tone in U where the vowel is high in Hu and/or Lamet (a) vs. low... | Download Scientific Diagram](https://www.researchgate.net/publication/286695416/figure/tbl4/AS:1053196843773953@1628113103920/High-tone-in-U-where-the-vowel-is-high-in-Hu-and-or-Lamet-a-vs-low-tone-when-the-vowel.png)
High tone in U where the vowel is high in Hu and/or Lamet (a) vs. low... | Download Scientific Diagram
Phonetic complexity affects children's Mandarin tone production accuracy in disyllabic words: A perceptual study | PLOS ONE
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