TY - BOOK AU - Lockhart,J.A.R. AU - Wiseman,A.J.L. TI - Introduction to crop husbandry SN - 0080181155 U1 - 633 PY - 1976/// CY - Oxford PB - Pergamon Press KW - Cropping systems KW - Crops KW - Field corps KW - Agricultural pests KW - Control N1 - Includes index ER -