00778nam a2200193Ia 4500 CTU_43153 210402s9999 xx 000 0 und d 333.715 C734 Committee on Resources and man of the Division of Earth Sciences Resources and man: A study and recommendations Committee on Resources and man of the Division of Earth Sciences San Francisco, California W. H. Freeman 1969 Peace, population, and resources are the central interlocking variables whose unsatisfactory management threatens our options. Natural resources,Tài nguyên thiên nhiên Trúc Trung tâm Học liệu Trường Đại học Cần Thơ