Human Waste Used by 200 Million Farmers, Study Says Eichenseher 200 million farmers fertilize with human waste depended on feces for fertilizing fields Human Waste Used By 200 Million Farmers, Study Says Eichenseher depended on feces for fertilizing fields means of fertilisation National Geographic News Eichenseher Human Waste Used by 200 Million Farmers, Study Says Human Waste Used by 200 Million Farmers, Study Says Eichenseher Human Waste Used by 200 Million Farmers, Study Says Eichenseher Eichenseher http://news.nationalgeographic.com/news ... waste.html 200 million farmers fertilize with human waste National Geographic News Human Waste Used by 200 Million Farmers, Study Says Human Waste Used by 200 Million Farmers, Study Says Human Waste Used by 200 Million Farmers, Study Says Human waste used by 200 million farmers, study says Eichenseher popular fertilizer Human Waste Used by 200 Million Farmers, Study Says depended on feces for fertilizing fields Eichenseher