52 ENVIRONNEMENT | MT 5216 détérioration de l'environnement | BT1 pollution | RT droit de la mer [1231] | hydrocarbure [6616] | transport maritime [4821]
52 ENVIRONMENT | MT 5216 deterioration of the environment | BT1 pollution | RT hydrocarbon [6616] | law of the sea [1231] | maritime transport [4821]