00915nam a2200205Ia 4500 CTU_143390 210402s9999 xx 000 0 und d 333.7 R399/Vol. 2 Renewable natural resources and the environment : pressing problems in the developing world by Kenneth Ruddle and Walther Manshard. Dublin Published for the United Nations University by Tycooly International Pub 1981 The preparation of this book was greatly facilitated by a large number of people around the world who assisted in tracking down the ever-elusive" grey material" who helped dispel numberous,... Natural resources,Environmental policy,Nguồn tài nguyên thiên nhiên Management.,Quản lý Năm Trung tâm Học liệu Trường Đại học Cần Thơ