Guide to implementation of phytosanitary standards in forestry

comercio internacional commerce international control de plagas directrices exportaciones exportation exports forest health forest pests forest products forest protection guidelines importaciones importation imports international trade lutte antiravageur medidas fitosanitarias mesure phytosanitaire monitoring pest control pests of plants phytosanitary measures plagas de plantas plagas forestales principe directeur productos forestales produit forestier ravageur des plantes reglamentaciones regulations sanidad de los bosques surveillance vigilancia