ERS-USDA, 2010. USDA Briefing Rooms Document reference ERS-USDA, 2010. Soybeans and oil crops: Sunflowerseed. USDA Briefing RoomsWeb http://www.ers.usda.gov/Briefing/SoybeansOilcrops/sunflower.htmCitation key ERS-USDA, 2010Datasheets Sunflower (general)
