F.O. HAQQIYEVA. ANALYSIS OF THE CONTENT AND DEVELOPMENT TRENDS OF THE PRESCHOOL EDUCATION SYSTEM IN DEVELOPED COUNTRIES. PORTUGAL-SCIENTIFIC REVIEW OF THE PROBLEMS AND PROSPECTS OF MODERN SCIENCE AND EDUCATION, [S. l.], v. 1, n. 7, p. 14–17, 2025. Disponível em: https://e-conferences.org/index.php/portugal/article/view/394. Acesso em: 15 may. 2026.