Microsoft founder Bill Gates points at a jar containing human faeces during his speech at the Reinvented Toilet Expo showcasing sewerless sanitation technology in Beijing

Mengenal Filantropi yang Jadi Rahasia Kesuksesan Bill Gates
Mengenal Filantropi yang Jadi Rahasia Kesuksesan Bill Gates
Mengenal Filantropi yang Jadi Rahasia Kesuksesan Bill Gates