Khusanova, N., and G. Shaykhova. “HYGIENIC ASSESSMENT OF THE CONDITIONS OF EDUCATION IN THE PREPARATORY GROUPS OF PRESCHOOL INSTITUTIONS”. Toshkent Tibbiyot Akademiyasi Axborotnomasi, no. 1, July 2020, pp. 140-3, https://mail.journals.tma.uz/index.php/ttaa/article/view/207.