Формирование экологической культуры школьников в условиях УПК(Диссертация)

Формирование экологической культуры школьников в условиях УПК(Диссертация)

193 Pages · 2004 · 1.2 MB · Russian
by Чикильдина Н.А.
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“ Open your mouth only if what you are going to say is more beautiful than the silience. ” ― BUDDHA
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