1. Introduction: sources of international environmental law (IEL)
{"Image DocumentName": "1. Introduction: sources of international environmental law (IEL)", "Image ImageDescription": "VOLUNTARY AGREEMENTS. In addition to international treaties, recent years have increasingly given rise to numerous types of voluntary international agreements. Example: partnership agreements involving countries and private sector entities, pledges found in political resolutions, codes of conduct, and declarations, agendas, programs, and various other non-binding instruments. Voluntary agreements could be used as evidence of practice, both with regard to the interpretation of treaties under article 31(3)b of the Vienna Convention on Treaties, as well as to establish customary law.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}