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112 - How to Build a Drill Charging Station us... 

22 min

 

tutorial

FORUM - Forum Berufsbildung, Berlin, Germany

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Burkina Faso : M’YAABA, les couveuses solaires... 

Français 5 min

Organic Farming, AGRICULTURE

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UARD - University of Agribusiness and Rural Development, Plovdiv, Bulgaria

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Human Environment Interaction 

English 3 min

ENVIRONMENT