Subject(s): Small business in United States. -- New business enterprises in United States. -- Entrepreneurship. -- Systematic entrepreneurship , purposeful innovation and the seven sources for innovative opportunity, source- unexpected, incongruities, process need, industry and market structures, demographics, changes in perception, Principles of innovation -- Practice of entrepreneurship : Entrepreneurial management, Entrepreneurial business, service institution, New venture -- Entrepreneurial strategies : ecological niches, changing values and characteristics