Costa Rica (1) Vowels (1) Tongue (1) Sex (Biology) (1) Population (1) Phonetics, Acoustic (1) Literature (1) Language and languages (1) Grammar, Comparative and general--Phonology (1) Vocales (1) Fonética acústica (1) Diptongo (1) Lengua (1) Fonología (1) Lenguaje (1) Datos (1) Literatura (1) Población (1) Sexo (1) distribution (1)