Microeconomics : principles and policy / William J. Baumol, Alan S. Blinder. Baumol, William J. 8551 Economics. 525 HB171.5 .B322 1991 330 20 Includes index. San Diego : Harcourt Brace Jovanovich, c1991. c1991. 1991 Text xxxi, 892, 8, 12 p. : eng