Food aid : the challenge and the opportunity
Hans Singer1987 年出版245 页ISBN：0198285183
SCARCITY AND OPPORTUNITY IN AN INDIAN VILLAGE
JAEMS M.FREEMAN1977 年出版180 页ISBN：0881331651
Invisible Capital:How Unseen Forces Shape Entrepreneurial Opportunity
Rabb2010 年出版173 页ISBN：
LAND OF OPPORTUNITY:THE ENTREPRENEURIAL SPIRIT IN AMERICA
DONALD LAMBRO1986 年出版176 页ISBN：0316512893
Effective Crisis Communication Moving From Crisis to Opportunity
Robert R. Ulmer2017 年出版220 页ISBN：
THE AMERICAN HIGH SCHOOL:ITS RESPONSIBILITY AND OPPORTUNITY
HOLLIS L.CASWELL1946 年出版264 页ISBN：
EFFECTIVE CRISIS COMMUNICATION:MOVING FROM CRISIS TO OPPORTUNITY
ROBERT R.ULMER2010 年出版239 页ISBN：
ILLUSIONS OF OPPORTUNITY:THE AMERICAN DREAM IN QUESTION
JOHN E.SCHWARZ1997 年出版237 页ISBN：0393973913
