This edition is a translation of one of the best American textbooks on organizing industry markets. It examines the problems most frequently encountered in the analysis of market competition, as well as possible ways to solve them. The book is distinguished by simplicity, liveliness and accessibility of presentation. To master the material, the reader needs elementary mathematical training. The abundance of graphs makes the learning process easier. The theory is richly illustrated by examples from the economies of the United States and other (predominantly European) countries.