Some Аspects of the Тeaching Staff Training for Ecologica-Education in Secondary Schools., Stable development and ecology /Dermendjieva, S. & V. Velikov/.


Дерменджиева, Стела (1991) Some Аspects of the Тeaching Staff Training for Ecologica-Education in Secondary Schools., Stable development and ecology /Dermendjieva, S. & V. Velikov/. Stable development and ecology – XXI Century. Sofia, p. 100.


 
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 Стела Дерменджиева

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