Kay, Ronald D Farm management / Ronald D. Kay, William M. Edwards, Patricia A. Duffy. - 7th ed. - New York : McGraw-Hill, c2012. - xiv, 1 leaf, 466 p. : ill. ; 24 cm. Includes index. ISBN: 9780071086561 Subjects--Topical Terms: Farm management. LC Class. No.: S561 / /K39 2012