Amazon.com description: Product Description: Designed to be compatible with standard college textbooks, Barron's EZ-101 Study Keys give students an overview of college-level introductory courses in many subjects. Classroom-style notes emphasize key facts, remind students what they need to remember for exams and papers, and guide them through the complexities of lectures and textbooks. This updated edition covers approximately 100 key topics in brief, easy-to-master note form. They include economic models, supply and demand, variations in consumer behavior, competition in the marketplace, monopoly, oligopoly, and much more.