Microeconomic principles / Frank A. Cowell. Cowell, Frank A. (Frank Alan) 8660 Microeconomics. 8567 HB172 .C59 1986 338.5 19 Includes bibliographical references and index. New York : Oxford University Press, 2006. 2006. 1986 Text ix, 630 p. : http://www.loc.gov/catdir/enhancements/fy0636/86012695-d.html eng