并列题名：Ecological man: the image of man in environmental law Ecological man: the image of man in environmental law 并列题名：Ecological civilization and environmental laws 并列题名：Climate change and environmental law 并列题名：Ecological environmental law 并列题名：Encouraging mechanism of environmental law 并列题名：Essentials of Roman environmental law 并列题名：On the legitimacy of environmental law 并列题名：On the regional environmental law 并列正题名：Implementation mechanism of the Canadian environmental law