Acknowledgement -- Introduction -- 1. The framework in SPE and some criticism -- 1.1 An outline of the framework in SPE -- 1.2 Problems with the testability of phonetic representations and phonetic features in SPE -- 1.3 Two attitudes towards SPE -- Notes to chapter 1 -- 2. Modifications and extensions of the SPE framework -- 2.1 Phonetic features -- 2.2 Utterances, phonetic transcriptions and phonetic representations -- 2.3 Interferences between feature coefficients in sounds -- 2.4. Summary -- Notes to chapter 2 -- 3. The feature NASAL -- 3.1 Definitions of the feature NASAL -- 3.2 Coefficients on the physical scale -- 3.3 Survey of problems and outline of chapters -- 3.4 Problems outside the scope of this study -- Notes to chapter 3 -- 4. The appropriateness of the definition of the feature NASAL -- 4.1 Two opposing views of the perception of vowel nasality -- 4.2 Evidence in favour of a new definition of the feature NASAL -- 4.3 Some implications and conclusions -- Notes to chapter 4 -- 5. A survey of data on nasality -- 5.1 A review of data on nasality -- 5.2 Estimates of the amounts of nose coupling and mouth constriction -- 5.3 Summary -- Notes to chapter 5 -- 6. The internal structure of oral and nasal vowels in various environments -- 6.1 Vowels in nonnasal environments -- 6.2 Vowels preceded by a nasal consonant -- 6.3 Vowels followed by a nasal consonant -- 6.4 Theoretical implications -- Notes to chapter 6 -- 7. Height in oral and nasal vowels -- 7.1 Articulatory data -- 7.2 Perceptual and typological data -- 7.3 Discussion -- 7.4 Integration into the theoretical framework -- Notes to chapter 7 -- 8. Nasal consonants and their relation to vowels -- 8.1 Nasal consonants -- 8.2 Nasality in consonants and vowels -- 8.3 Nasal consonants, segmentation and coproduction -- 8.4 Integration of conclusions -- Notes to chapter 8 -- Retrospect.

Appendix 1 -- Appendix 2 -- Appendix 3 -- Appendix 4 -- Appendix 5 -- Bibliography.