Voluntary Eco-Labelling Programmes and Questions of State Responsibility in the WTO/GATT Legal System - Journal of World Trade View Voluntary Eco-Labelling Programmes and Questions of State Responsibility in the WTO/GATT Legal System by - Journal of World Trade Voluntary Eco-Labelling Programmes and Questions of State Responsibility in the WTO/GATT Legal System 29 5 Journal of World Trade