Andrusenko І. В. . THE TEXTBOOK OF NATURAL SCIENCE AS A MEANS OF FORMATION OF ECOLOGICAL ABILITIES OF YOUNGER SCHOOLBOYS. Problems of the modern textbook, [S. l.], n. 15, p. 9–17, 2015. Disponível em: https://ipvid.org.ua/index.php/psp/article/view/439. Acesso em: 18 may. 2024.