Bron: Eco Pure Maart 2003
Treating City Garbage Prevents Pollution of The Nile/ Water of Fish Farming Ponds Is Reused for Farming 
Bron: Eco Pure Maart 2003
Bron: Eco Pure Maart 2003
Treating City Garbage Prevents Pollution of The Nile/ Water of Fish Farming Ponds Is Reused for Farming
Bron: Eco Pure Maart 2003