This video shows the manufacture of biosand filters in rural Tanzania.
WATER4LIFE WATER4LIFE (2012): The Manufacture of Bio-Sand Water Filters in Rural Tanzania. URL [Accessed: 25.09.2012]This video shows the manufacture of biosand filters in rural Tanzania.
WATER4LIFE WATER4LIFE (2012): The Manufacture of Bio-Sand Water Filters in Rural Tanzania. URL [Accessed: 25.09.2012]