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Living Economics by livingecon.org (CC BY-SA)
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Microeconomics for Business by Ogloblin, Brown, King, and Vernier (CC BY-NC)
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Outline of the U.S. Economy by Conte and Karr (PD)
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Political Economy by Wikipedia (CC BY-SA)
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Principles of Economics by Carnegie Mellon University Open Learning Initiative (CC BY-NC-SA)
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Principles of Economics by Rittenberg and Tregarthen (Custom License)
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Principles of Economics 2e by Greenlaw, Shapiro, and Taylor (CC BY)
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Principles of Macroeconomics by Curtis, Irvine, and Lyryx Learning (CC BY-NC-SA) Ancillaries
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Principles of Macroeconomics 2e by Greenlaw, Shapiro, and Taylor (CC BY)
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Principles of Macroeconomics for AP® Courses 2e by Greenlaw, Shapiro, and Taylor (CC BY)
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Principles of Microeconomics by Curtis, Irvine, and Lyryx Learning (CC BY-NC-SA) Ancillaries
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Principles of Microeconomics 2e by Taylor, Greenlaw, and Shapiro (CC BY)
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Principles of Microeconomics for AP® Courses 2e by Greenlaw, Shapiro, and Taylor (CC BY)
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USA Economy in Brief by U.S Department of State Bureau of International Information Programs (PD)

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