Brazil | Events 2017 Preparação Vocal da cantora da Capela São Francisco de Assis 2017-05-01 Brazil, Events 2017
Events 2017 | Russian Federation Lecture “Prophylaxis of voice disorders in students of vocal faculty” 2017-04-27
Events 2017 | Russian Federation Questionnaire for students “Voice disorders and its prophylaxis” 2017-04-13
