00518nam a2200181Ia 4500 CTU_5717 210402s9999 xx 000 0 und d 330.9 W256 Barbara Ward The rich nation and the poor nation Barbara Ward New York Norton and Co 1962 economic conditions,economic geography Nguyễn Quang Điền, 960727 Trung tâm Học liệu Trường Đại học Cần Thơ