TY - BOOK TI - Corn and corn improvement T2 - Agronomy ; no. 18 SN - 0891180990 AV - SB191.M2 C67 1988 PY - 1988/// CY - Madison, Wis. PB - American Society of Agronomy KW - Corn KW - Breeding N1 - Includes bibliographical references and index ER -