This is an English hardcover textbook titled "Principles of Economics 9th Edition" by N. Gregory Mankiw. It has a total of 864 pages and measures 10.2 inches in length, 8.7 inches in width, and 1.3 inches in height. The book was published by Cengage South-Western in 2020 and belongs to the Mindtap Course List Ser. series. Its International Standard Book Number (ISBN-13) is 9780357038314. This textbook covers Economic Policy and is ideal for students of Economics who want to learn more about the subject. It is a revised edition and is in good condition.