TY - BOOK AU - Simmonds,N.W. ED - Smartt, J. TI - Principles of crop improvement SN - 9788126544653 AV - SB123 .S53 1987 U1 - 631.52 19 PY - 1987///, c1979 CY - Harlow, Essex, England, New York PB - Longman Scientific & Technical, Wiley KW - Plant breeding N1 - Reprint. Originally published: London ; New York : Longman, 1979; Includes indexes; Bibliography: p. 369-399 ER -