Excerpt from the report Summary: This research project comprises (1) an analysis of the competitive processes in city milk markets, and (2) case studies of 23 phases of price warfare in 13 cities. The general analysis has helped us to identify the basic conditions of milk marketing which give rise to price wars. The case studies have contributed to our understanding of (1) the specific precipitating factors which touch off price wars, and (2) the kinds of changes in the structure and practices of the markets which occur in the course of price warfare. Then, from both the general analysis and the case studies we have been able to reach certain conclusions bearing on the relationship of price warfare to performance of the milk industries, and to indicate the implications of these conclusions for public policy.