One Leonard Weiss' Contributions to Research in Industrial Organization.- Two Costs, Demand, and Imperfect Competition as Determinants of Plant-Level Output Prices.- Three The Functional Relationship Between Prices and Market Concentration: The Case of the Banking Industry.- Four The Effectiveness and Stability of Highway BidRigging.- Five Price Changes and Mergers in U.S. Manufacturing, 1985-1986.- Six Price Challges from 1958 to 1982.- Seven Problems...