TY - BOOK AU - Hargrove,W.L. TI - Cropping strategies for efficient use of water and nitrogen T2 - ASA special Publication SN - 0891180974 (paperback) AV - S602.5 C76 PY - 1988/// CY - Madison PB - American Society of Agronomy KW - Cropping systems KW - Crops and water KW - Crops and nitrogen N1 - Includes chart ER -