books.google.ca - MACROECONOMICS: PRINCIPLES AND POLICY, Twelfth Edition, teaches the principles of economics, including current economic situations providing an essential resource for students by using policy based information for examples and applications. The text inclu...http://books.google.ca/books/about/Macroeconomics_Principles_and_Policy_12t.html?id=M2Wn637mgTMC&utm_source=gb-gplus-shareMacroeconomics: Principles and Policy, 12th ed.