00828nam a2200217Ia 4500 CTU_220708 210402s9999 xx 000 0 und d 330.973 F455 Field, Richard M. Natural resources of the United States : A basics for economic Geography Richard M. Field New York Barnes and Noble 1936 This book summarizes the important natural resources within the sovereign territory of the United States, and wherever possible the statistical material has been complied in the form of tables and maps Natural resources,Tài nguyên thiên nhiên United States,Hoa Kỳ Nguyên Trung tâm Học liệu Trường Đại học Cần Thơ