Martin, John H. Principles of field crop production / John H. Martin, Richard P. Waldren, David L. Stamp. - 4th ed. - Upper Saddle River, N.J. : Pearson Prentice Hall, c2006. - xxi, 954 p. : ill., maps ; ISBN: 0130259675 Subjects--Topical Terms: Field crops LC Class. No.: SB187.U6 / M3 2006