Verlag new academic pressHugh D Purcell × Private InvestmentMicroeconomics at the Personal LevelHugh D Purcellnew academic pressBuch1991 Speaking and writing Hugh D Purcellnew academic pressBuch1990 Private InvestmentMicroeconomics at the Personal LevelHugh D Purcellnew academic pressSoftcover1990 Private InvestmentMicroeconomics at the Personal LevelHugh D Purcellnew academic pressSoftcover1986