Recycling animal and human dung is the key to sustainable farming
Original article: http://www.lowtechmagazine.com/2010/09/recycling-animal-and-human-dung-is-the-key-to-sustainable-farming.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+typepad/krisdedecker/lowtechmagazineenglish+(Low-tech+Magazine)&utm_content=Google+Feedf