Pest control: an assessment of present and alternative technologies - v. 4: Forest pest control: the report of the Forest Study Team (of the) Study on Problems of Pest Control, Environmental Studies Board, NRC

arbre forestier control de plagas enfermedades de las plantas forest trees insecte nuisible lutte antiravageur maladie des plantes malezas mauvaise herbe mechanical damage pest control pest insects pesticide pesticides pests of plants plagas de plantas plaguicidas plant diseases ravageur des plantes weeds