On the legal issues of intergovernmental cooperation in the governance of transboundary pollution 并列题名：On the legal issues of intergovernmental cooperation in the governance of transboundary pollution Study on the legal issues of intergovernmental cooperation in regional economic integration Research on legal issues of intergovernmental collaborative prevention and control for regional atmospheric pollution 并列题名：Research on legal issues of intergovernmental collaborative prevention and control for regional atmospheric pollution Study on the legal issues of the international cooperation of audit oversight for the listed companies