Duzh, A. N. Epidemiological survey methods and their role in dental disease prevention : video lecture for the 2nd year students, majoring in the specialty 31.05.03 Dentistry / A. N. Duzh ; Krasnoyarsk State Medical University. - Krasnoyarsk : KrasSMU, 2022. - Изображение. Устная речь. Текст : электронные