SOBKO А. The ration for 11–14 years old school children in a hiking trip . "INTERNATIONAL·SCIENTIFIC-·PRACTICAL·JOURNAL·COMMODITIES·AND·MARKETS", [S. l.], v. 12, n. 2, p. 156–162, 2011. Disponível em: https://journals.knute.edu.ua/commodities-and-markets/article/view/1508. Acesso em: 1 may. 2024.