Book reviewCrops residue management and managing agricultural residues: J.L. Hatfield and B.A. Stewart (Editors). Proceedings of the Crop Residue Management Workshop, Kansas City, Missouri, 31 March–2 April 1992. Lewis Publishers, Boca Raton, FL, 1994. ISBN 1-56670-003-5, 220 pp., hardback, US$ 77.95 and Paul W. Unger (Editor). Lewis Publishers, Boca Raton, FL, 1994. ISBN 0-87371-730-9, 448 pp., hardback, US$ 139.95