Design This family produces 6,000 pounds of food per year on 4,000 square feet of land

[Bill Perry]

http://inhabitat.com/this-family-produces-6000-pounds-of-food-per-year-on-4000-square-feet-of-land/

http://off-grid.info/blog/urban-agroecology-6000-lbs-of-food-on-10th-of-an-acre/