00624nam a2200217Ia 4500 CTU_87518 210402s9999 xx 000 0 und d 562000 341.7 B792 Boyle, Alan International law and sustainable development : Past achievements and future challenges Alan Boyle, David Freestone Oxford Oxford University Press 1999 Sustainable development Law and legislation Giang Trung tâm Học liệu Trường Đại học Cần Thơ