Plant protection in the tropics; proceedings...

biological control control de enfermedades control de insectos control de roedores cuarentena disease control enfermedades de las plantas escarda insect control insecte nuisible integrated control lucha integrada lutte antirongeur lutte biologique maladie des plantes malaisie malasia malaysia pest insects pest resistance pesticide pesticides plaguicidas plant diseases plant protection protection des plantes quarantaine quarantine resistance to injurious factors resistencia a las plagas rodent control weed control