Krugman, Paul R., author
Scott, Foresman, 1988
Buku Teks
Krugman, Paul R., author
Addison-Wesley, 2000
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Krugman, Paul R., author
Harper Collins Publishers , 1991
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Krugman, Paul R., author
Harper Collins , 1994
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Krugman, Paul R., author
Pearson Education , 2014
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