TY - BOOK AU - Grant,Dwight ED - United States. TI - Optimal futures positions for corn and soybean growers facing price and yield risk T2 - ERS technical bulletin PY - 1989/// CY - Washington, D.C PB - U.S. Dept. of Agriculture, Economic Research Service KW - Commodity futures KW - Hedging (Finance) N1 - "March 1989."--p. i; Cover title; Includes bibliographical references (p. 14-16) ER -