Taussig, F. W.
Principles of economics/ F. W. Taussig
Macmillan, 1947
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Frank, Robert H.
Principles of economics
McGraw-Hill, 2001
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Case, Karl E.
Principles of economics
Pearson, Prentice Hall, 2009
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Mankiw, N. Gregory
Principles of economics
Harcout College, 1998
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Case, Karl E.
Principles of economics
Prentice-Hall, 2004
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