BOYADZHIEV, Veselin. THE MINERAL WATERS OF STRELCHA (BULGARIA) AS A FACTOR FOR SOCIAL AND PERSONAL DEVELOPMENT. KNOWLEDGE - International Journal , [S. l.], v. 47, n. 5, p. 909–912, 2021. Disponível em: https://ojs.ikm.mk/index.php/kij/article/view/4873. Acesso em: 30 may. 2026.