"Vowels." . . "almen fonetik" . . . . . "The Vowel, its nature and structure" . . . . . . . . . . . . . . . "The vowel, its nature and structure"@en . "The vowel, its nature and structure" . "The Vowel, its nature and structure. [With plates, including a portrait.]"@en . "vowel, its nature and structure" . . . . . . . . "The vowel its nature and structure"@en . . "The vowel : its nature and structure" . "The vowel : its nature and structure"@en . . . . . . . . . . . . . "Voyelles." . . "Vocales." . . "vokaler" . . "Phonetik." . . "Vokal." . . "Klinkers." . .