ОРЖАХОВСЬКА, А. Г. School geography course ecologization in the 90s. Pedagogy of Higher and Secondary Education, Kryvyi Rih, Ukraine, v. 38, p. 330–333, 2013. DOI: 10.31812/educdim.v38i0.3240. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/3240. Acesso em: 22 nov. 2024.