52 MILIEU | MT 5216 Aantasting van het milieu | BT1 verontreiniging | RT koolwaterstof [6616] | vervoer over zee [4821] | zeerecht [1231]
52 ENVIRONMENT | MT 5216 deterioration of the environment | BT1 pollution | RT hydrocarbon [6616] | law of the sea [1231] | maritime transport [4821]