Видеодневник 2. Сколько воды в Алтайском крае? Юные хранители родников. Первые пробы воды
«Чистые родники Алтая»: видеодневник проекта. Часть 2. Лекционный этап, январь-февраль 2020.
Карта родников:
Доба...
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