Humour, por Alfredo Martirena

The water: A big problem

Alfredo Martirena

Alternative mud bricks

 
© y ® Alfredo Martirena

E-Learning



 © y ® Alfredo Martirena

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Consultants

Pedro Seijo
Cuban
Professor of Civil Engineering
Spanish, English
Teaching, ecomaterials workshop management, research (municipal waste)

Videos

Inodoro seco
Otji toilet - In english, spanish subtitles
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