Source: Research Institute of Organic Agriculture and International Federation of Organic Agriculture Movements. The World of Organic Agriculture: Statistics and Emerging Trends 2010, Bonn, Germany, FiBL and IFOAM, 2010.
Source : Research Institute of Organic Agriculture and International Federation of Organic Agriculture, The World of Organic Agriculture: Statistics and Emerging Trends 2010, Bonn, Allemagne, FiBLand / FOAM, 2010.