Environmental Protection and the Single Market: An Unsustainable Development. Does the EC Treaty Need a Title on the Environment? - Legal Issues of Economic Integration View Environmental Protection and the Single Market: An Unsustainable Development. Does the EC Treaty Need a Title on the Environment? by - Legal Issues of Economic Integration Environmental Protection and the Single Market: An Unsustainable Development. Does the EC Treaty Need a Title on the Environment? 22 1 Legal Issues of Economic Integration