9 Agosto 2012
Solución para comunidades con escasa agua, la letrina seca que se usa para fertilizar… http://t.co/reaEP8pT
August 09, 2012
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Improving Sanitation with the Peepoo Bag | greenUPGRADER
Solución para comunidades con escasa agua, la letrina seca que se usa para fertilizar campos de cultivo, #plástico
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