"Enginyeria del medi ambient." . . "Protecció del medi ambient." . . "Environnement, Technique de l'." . . "Environnement, Technique de l'" . "Protecció ambiental." . . "Environnement Droit international." . . "Politique de l'environnement." . . . . . . . . . "Precautionary legal duties and principles of modern international environmental law : the precautionary principle: international environmental law between exploitation and protection" . . . "Precautionary legal duties and principles of modern international environmental law : the precautionary principle: internatinal environmental law between exploitation and protection" . "Precautionary legal duties and principles of modern international environmental law : the precautionary principle : international environmental law between exploitation and protection" . . . . . . . . . . . . . . . . . . . . . "Internationales Umweltrecht." . . "Internationale organisaties." . . "Environnement Protection." . . "environnement - protection." . "Medi ambient Dret internacional." . . "Internationaal milieurecht." . . "Enginyeria ambiental." . . . . "Internationale regelgeving." . . "Dret ambiental." . .