PPest control and its ecologyPest control and its ecologyde Helmut Fritz Van EmdenMateriasControlPesticidesEnvironmental aspectsPestsEdiciones (1)Pest control and its ecology (1974)Edward ArnoldMás obras de Helmut Fritz Van EmdenHandbook of agricultural entomologyAphid technology; with special reference to the study of aphids in the fieldAAphids as crop pests / edited by H.F. van Emden and R. HarriAphids as crop pests / edited by H.F. van Emden and R. Harrington
AAphids as crop pests / edited by H.F. van Emden and R. HarriAphids as crop pests / edited by H.F. van Emden and R. Harrington
