GRAINS-Corn sags on firm dollar, concerns over U.S. export demand
CBOT corn hits lowest price since Oct. 19*Soybean futures finish higher*Exporters sell U.S. soy to China, Spain - USDA(Adds closing prices, details on U.S....
CBOT corn hits lowest price since Oct. 19*Soybean futures finish higher*Exporters sell U.S. soy to China, Spain - USDA(Adds closing prices, details on U.S....