TY - GEN AU - Thresh, J.M TI - Pests pathogens and vegetation : the role of weeds and wild plants in the ecology of crop pests and diseases T2 - Association of applied biologists SN - 0-273-08498-4 U1 - 632.58 THR CY - London, Pitman Advanced Publishing Program KW - Agricultural Pests/ Plant diseases/ Weeds/ Agricultural ecology ER -