Paul Haig is a market researcher with 35 years of experience. This is his life's work. The book "Managerial Concepts and Business Models" is not the kind of book that is read from cover to cover, but it is like a reliable friend that will always come to the rescue in a difficult situation. The chapters are equally balanced, some of the proposed models are complex and voluminous, while others do not require detailed explanations. The functional table at the beginning of the book allows you to quickly find a suitable model for solving any business problem.