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Intermediate microeconomics
Ruffin, Roy J. - 1992 - 2. ed
Persistent link: https://www.econbiz.de/10013502821
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Principles of microeconomics
Ruffin, Roy J.; Gregory, Paul R. - 1990 - 4. ed
Persistent link: https://www.econbiz.de/10000824339
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Principles of microeconomics
Ruffin, Roy J.; Gregory, Paul R. - 1997 - 6. ed
Persistent link: https://www.econbiz.de/10000585001
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Principles of microeconomics
Ruffin, Roy J. - 2001 - 7. ed
Persistent link: https://www.econbiz.de/10001501770