A Macroeconomics book wirtten by Abel Bernanke from MIT(<Macroeconomics- by Abel, Bernanke, and Groushore>), which is widely used as a textbook by many Agricultural Economics Department in the U.S. It is commonly recognized that agrcultural economists need to have some background in Macroeconomics at least the intermediate level. As the agricultural research area expands to  global trade analysis related to agricultural commodities, more and more agecon students start to take advanced macroeconomcis courses. Any comments are welcome.